Top Circuits Page 205
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for the time in which it gets charged to 0. 6V, the other capacitor has already charged a whole lot(a value which I can`t figure out because the setup does not work until i reach one of the two states-Q1 is on or Q2 is on) The only reason the equation Tl=0.....
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Hi I am new to electronics and have some questions about reading circuit diagrams. When I look at circuit diagrams I don`t know which order the wires, ....
-
A problem we see a lot is that people have a schematic (otherwise knows as a circuit diagram) that they want to build. But they find there are....
-
Hope someone can help me. I want to build a square generator. I want it to have control for frequency variable 1hz to 200hz, a switchable voltage....
-
I want to rotate stepper motor using jonson counter 4017 IC. I also using bipolar stepper motor. I connected pin 3 2 4 7 (sequence) of 4017ic with....
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I have a Chemetron wirefeeder that I am using the motor and I want to use the speed control out of the control box to control the nice motor it had in ....
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Can someone please help explain to me how this circuit works? I am pretty sure I understand how the voltage divider network works. I am pretty sure I....
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HI ALL, PLZ LOOK THIS CIRCUIT. I BUILT THIS LAST DAY. BUT THIS IS NOT WORKING. I CHECKED ALL CONNECTIONS AND PARTS. BUT ALL IS OK. WHEN I TURN ON THE....
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Hey, Just wondering how to choose my L,C,R variables to achieve a desired frequency. Do I just choose any combination that yields X Mhz = 1 / ( 2pi *....
-
Hello, My goal is to control a 12 VDC device (on/off) from a microcontroller using a relay card. The relay needs 12 VDC operating power (I use the....
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I am attempting to design an alarm using a LM555 timer. I dont know where to start. My friends around have been designing them and I am trying to make ....
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-
Can anyone point me in the direction of a simple useable circuit i can build for testing crystals? I have seen loads of circuits as i am googling....
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Hi All after some though and reviewing feedback, I have adjust my plans to include/remove some functions. This project has already clocked up a few....
-
Hi all, I am in need of a DC-DC Power supply schematic that outputs between 12.7 and 14.5VDC and an input that could be anywhere from 12VDC up to....
-
Hi Everyone out there! I am new to microcontrollers. I am using AT89C55WD to control H-Bridge (L298) which in turn drives the DC motor. Circuits for....
-
Hello, I`m planning to design a circuit for a DC Motor with these parts: 1* 7805 2 * 2N2955 (paralleling two transistors to increase current) plus....
-
Hello sir, I need to design an astable multivibrator and supposed to calculate the maximum and minimum frequency generated at the output. Can you....
-
I`m having issues simulating this circuit on Proteus. Please take a quick look and make sure I did`nt make a goofy mistake. I`m also a novice with....
-
Also known as the stairstep-ramp , or simply counter A/D converter, this is also fairly easy to understand but unfortunately suffers from several....
-
I have successfully used a 4511 IC to make numbers 1-9 appear on a 7 segment led display, cool. Now how can I use this to say have it display a number ....
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Also called the parallel A/D converter, this circuit is the simplest to understand. It is formed of a series of comparators, each one comparing the....
-
Actually did (do) have access to the resistors but yes measured open (disconnected from any ground source or input source)....
-
I wanted to use a 3. 5" jack instead of a microphone, I would need to change something else in the circuit. What would be changed in order to use an audio jack instead of a electret microphone to transmit One like this: taken from an old radio. It has 7....
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Hello everyone, this is my first post here. I am building my first circuit (outside of class) and am having trouble tuning my radio. What I have: So....
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I need someone to look at this. I designed this H-Bridge to run a 12VDC, 6 Amp motor. It worked great on the breadboard at 7.2 VDC running a small DC....
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I have created an H-bridge PC with 4x floating gate drivers and 4x IGBTs (see attached schematic showing half of h-bridge). It works very nicely but I ....
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Ok first of all I am sort of a complete noob I made a `crystal` radio circuit from parts i got out of an old busted radio, a LM386N audio amplifier ....
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This circuit seems interesting and I wanted to simulate and construct it, but the problem is I do not know what do the 3 symbols in the circuit represent (1 in audio input, 1 in the middle, and 1 at the antenna). I have never come across with these symbols....
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Hey all I`m new to both the forums and electronics. Recently I chanced upon a Laser Alarm System and decided to give it a go....
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Hi Guys, Relatively new electronics newbie here - so thanks for your help Recently I purchased several electromechanical seven segment vane displays....
-
Hi everyone, A bit of background first, I know only the basics of electronics (ie: I know what components do and how to read schematics), but have no....
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A diesel tractor that has a magnetic reed switch in the fuel tank to indicate low fuel. This switch is open when there is fuel in the tank, and closes when the level drops below it. When this switch closes a 12v relay is energized to disengage the fuel....
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Hello, this is my first post here. I built several versions of JFET static charge detectors and I`m seeing some differences I can`t explain so I`m....
-
Hi, I wanted to build an IR-transmitter-receiver system to send signals to a device . Let`s say the device is a simple blue LED (just to make life....
-
For the following circuit of the JDM pic microcontroller programmer I need information about the PIC microcontroller pins which receive the RS232....
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Hello. I am trying to design an LC Colpitts oscillator. This is the circuit. I came up with this based on the Colpitts oscillator shown on this....
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Hi folks. I`m new to the forum and relatively new to diy electronics. My current project involves trying to make a battery-powered LED dimmer circuit. ....
-
Yes, both of those transistor types will be suitable. Is the ""sn9304"" a 2N3904? That`s a common type. You`re going to have four LEDs on at a ....
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I have put all the components on the PCB, now i dont know anything about relays, so i`m having trouble connecting the power and the load?....
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I get that the LM723 current sense and current limit pins (2 & 3) see a voltage created by the very low restistance current limiting resistors and that when this voltage reaches a certain value, the IC shuts down or limits the power supply output. How or....
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The other thing I thought of is using a phase shift oscillator followed by an inverter to turn the sine into a square wave, but it semms a rather crude solution. I`m also looking for the schematics to a frequencydivider. I know you can use a flip flop to....
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Looking for resistor value and capacitor value for low pass filter to remove RF. The application is removing undesired untuned RF from the crystal set ....
-
I`ve done some research and found that sender will read 100 ohms when the fuel tank is empty, so a trigger reading of 80 ohms would be ideal....
-
Hello, I assembled a circuit on a breadboard which is separated in 2 parts: the right part is for generating an alarm which wails. the left part is....
-
basically i have what is known as a bite alarm (for fishing). normally bite alarms beep as the fishing line passes over a wheel which usually has notches in it to allow some sort of optical switching making it go beep-beep-beep until the wheel stops. however....
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Dear friends i need your advice about the connection diagram of the MAX4685 analog switch attached. I have two inputs VI1 and VI2 and hence we have....
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Hi, I am trying to use a Panasonic microwave inverter for a project I am experimenting with. I have limited knowledge with electronics but I can work....
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Originally Posted by CocaCola His clearly stated his circuit didn`t work correctly, the series was only complete when both LEDs were enabled, not the....
-
A while ago i run across this document which apparently tells how to wire mosfets in series to get higher voltages (pg 10-14). This is the only schematic i found so far that is actually working. The problem is that i can`t make more than 3 mosfets work, when....
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That motor is rated for 6W which is 0.5 amps at 12V. I would use a 12V DC power supply rated at 1A or more. Any type will be OK. A plug-in adapter....
-
Hi Guys, first post to the forum here. I`m having a strange issue using an Intersil HIP4081A H bridge driver IC. I have it hooked up to an Arduino MCU ....
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Hi guys, I`m building a basic RC Car. There`s an LED in the receiver circuit which lights up when I press a button on the remote. But when I connect....
-
Hello: First of all I must start with the classic ""I`m new to this forum so excuse if this post is in the wrong section / this was already....
-
The wire speed DC motor is constantly receiving about 20 volts, regardless of the state of the switch on the nozzle handle. I checked the switch with an ohm meter. The switch works fine. I even disconnected the switch from the circuit board. The motor is....
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Hey guys, need some help with a project. Im pretty good with 12v electrical wiring but am having trouble figuring this out. Im building a switch panel ....
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Unfortunately I don`t have a breadboard to try this out on but can modify the PCB. I`ve removed the 1K pot till I can get the strobe working and than....
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hi everyone! my first post (for quite a while! lol!). i obviously haven`t still got an old enough tricky dicky catalog! in the data section there used ....
-
Hi guys. I`ve got a quiz buzzer circuit that is designed to output to a basic piezoelectric buzzer. What I really want to be able to do is to output....
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Here`s an updated schematic with the RF Solutions receiver and some other small additions. There`s a lot of extra circuitry to deal with the signals....
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HI FRIENDS, I HAVE A ANIMAL REPELLER CIRCUIT CIRCUIT DIAGRAM AS SHOWN: I HAVE WRKED ON THIS BUT NOT WORKING AS PREFERRED CAN U PLEASE CHECK THIS ONE....
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The schematic is attached, I`d like to have a suggestion if any improvement could be made, in particular I`d need to add a reverse polarity connection protection. I`m not a MOSFET expert, but: from the schematic I take it that the logic level inputs (5 V)....
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I am pulling my hair out since I keep destroying the Murata NMC1215SC DC/DC converters in my CPU controlled H-Bridge design. There is no obvious signs ....
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I built the Electric Scooter,E-Bike PWM speed controller circuit. I can not get the oscillator to work. I checked the pc bd and is ok All resistors....
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hello everyone..im need some helps i`ve construct the PWM and PPM circuit the output going smoothly but i`ve some problem im not very....
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This is the giant controller used for the game Steel Battalion for the xbox. I used this schematic diagram from a guy called Alpha who did it to his....
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I`m not able to get this circuit to give me full range of motion of a servo (only about 90 degrees). Maybe someone can take a look at the circuit and....
-
Hi all, My 6 year old son and I saw this on youtube I then pressed `print screen` from the video to cobble together this: ....
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Hey everybody! I`m working on a Singing Tesla Coil for a 4-H electricity project and I just finished my first draft of the circuitry. I was wondering....
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That`s a great idea to use the chips internal reference and some resistance to get the right bias on the audio; it would really reduce the parts count ..
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Solar cell type Maximum efficiency Practical efficiency Notes Selenium, polycrystalline 0.7% - 1883, Charles Fritts Silicon, single crystal - 4% 1950`s....
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To make your own PWM controller, start with this sawtooth generator. Run it from a 7. 5V regulated supply to make its Vpp 5V. Feed the sawtooth to one input of a comparator and the MAP voltage to the other input of the same comparator. Let the output drive a....
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A way to boost the wattage of my small scale Tesla coil. I`m not getting good wattage going coming off the secondary. I`m not sure what the current or voltage is but from what i can tell is that the coils are resonant and that the output is like 100kv at....
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I would like to build a board that has 1 - 120volt/600Watt input and > 3 - 120volt/200Watt outputs. The outputs we shall call A, B ....
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Hey guys, I am new to the forum. I hope this is the right section. Sorry if I ask some dumb questions, I am new to circuit design. This is for my....
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None of those devices is very suitable. The drivers aren`t specified to operate with 3.3V gate signals, and although the typical graph shows that a....
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Hi, I`m trying to build a circuit with two key switches, where both key switches need to be closed for the current to go through. I am trying to use a ....
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SCRs are unidirectional (one-way) current devices, making them useful for controlling DC only. If two SCRs are joined in back-to-back parallel fashion ....
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Can anybody tell me if the output of a monostable 555 timer circuit can be used to trigger another similar timer circuit. I have shown my idea with a....
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Here is a schematic that I need help understanding- On this circuit I`m assuming pin 2 is connected by a wire to pin 6 even though it doesn`t make....
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I don`t believe it was ever intended to be powered off a 9V battery. They`re feeble! Under 2 hours with an Alkaline, or....
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-
The voltage requirement the Solidus is desirous of is quite a bit higher than your circuit provides I know Chris. It was....
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Build a sine wave generator. I use this schematic:. The op-amp I have used is the TL082 and the power supply of 9V. However, I do get a nasty sound, indicating that I am not getting a sine wave but rather a distorted waveform. Any idea why this is happening....
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The circuit was meant to be powered by a power supply, which is why there is no transformer, rectifier, or filter capacitors on the schematic. There is no reason why you cannot add these. To use the circuit, hook it up to a power supply/plug it in. Then,....
-
Version V2. 9 supports also GPS-receiver with ANTARIS chipset and simultaneously using of internal temperature sensor of MS5534A and external DS1820 sensor. This version can use 24C256, 24C512 or 24C1024 EEPROMs and has an internal `bootloader` implemented.....
-
This is the electronic schematic of the homebuilt SONAR. Only one piezoelectric transducer is used for both transmit & receive. This transducer is switched from TX to RX via the four 4016 switches. A high gain amplifier stage & rectifier translates the....
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To the left in the diagram, you find the micro memory containing up to 64 different addresses each with 15 bits (numbered 1 to 15) that we call the micro operations or MOPs for short. The MOPs control every aspect of the computer. To the left, you also find....
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The single-transistor inverter circuit illustrated earlier is actually too crude to be of practical use as a gate. Real inverter circuits contain more than one transistor to maximize voltage gain (so as to ensure that the final output transistor is either in....
-
This schematic illustrates a real circuit, but it isn`t called a "two-input inverter. " Through analysis we will discover what this circuit`s logic function is and correspondingly what it should be designated as. Just as in the case of the inverter and....
-
Most ohmmeters of the design shown in the previous section utilize a battery of relatively low voltage, usually nine volts or less. This is perfectly adequate for measuring resistances under several mega-ohms (M ©), but when extremely high resistances need....
-
Build the circuit and measure voltage drops across each component with an AC voltmeter. Measure total (supply) voltage with the same voltmeter. You will discover that the voltage drops do not add up to equal the total voltage. This is due to phase shifts in....
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The 555 integrated circuit is a general-purpose timer useful for a variety of functions. In this experiment, we explore its use as an astable multivibrator, or oscillator. Connected to a capacitor and two resistors as shown, it will oscillate freely, driving....
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for the time in which it gets charged to 0. 6V, the other capacitor has already charged a whole lot(a value which I can`t figure out because the setup does not work until i reach one of the two states-Q1 is on or Q2 is on) The only reason the equation Tl=0.....
Hi I am new to electronics and have some questions about reading circuit diagrams. When I look at circuit diagrams I don`t know which order the wires, ....
A problem we see a lot is that people have a schematic (otherwise knows as a circuit diagram) that they want to build. But they find there are....
Hope someone can help me. I want to build a square generator. I want it to have control for frequency variable 1hz to 200hz, a switchable voltage....
I want to rotate stepper motor using jonson counter 4017 IC. I also using bipolar stepper motor. I connected pin 3 2 4 7 (sequence) of 4017ic with....
I have a Chemetron wirefeeder that I am using the motor and I want to use the speed control out of the control box to control the nice motor it had in ....
Can someone please help explain to me how this circuit works? I am pretty sure I understand how the voltage divider network works. I am pretty sure I....
HI ALL, PLZ LOOK THIS CIRCUIT. I BUILT THIS LAST DAY. BUT THIS IS NOT WORKING. I CHECKED ALL CONNECTIONS AND PARTS. BUT ALL IS OK. WHEN I TURN ON THE....
Hey, Just wondering how to choose my L,C,R variables to achieve a desired frequency. Do I just choose any combination that yields X Mhz = 1 / ( 2pi *....
Hello, My goal is to control a 12 VDC device (on/off) from a microcontroller using a relay card. The relay needs 12 VDC operating power (I use the....
I am attempting to design an alarm using a LM555 timer. I dont know where to start. My friends around have been designing them and I am trying to make ....
Can anyone point me in the direction of a simple useable circuit i can build for testing crystals? I have seen loads of circuits as i am googling....
Hi All after some though and reviewing feedback, I have adjust my plans to include/remove some functions. This project has already clocked up a few....
Hi all, I am in need of a DC-DC Power supply schematic that outputs between 12.7 and 14.5VDC and an input that could be anywhere from 12VDC up to....
Hi Everyone out there! I am new to microcontrollers. I am using AT89C55WD to control H-Bridge (L298) which in turn drives the DC motor. Circuits for....
Hello, I`m planning to design a circuit for a DC Motor with these parts: 1* 7805 2 * 2N2955 (paralleling two transistors to increase current) plus....
Hello sir, I need to design an astable multivibrator and supposed to calculate the maximum and minimum frequency generated at the output. Can you....
I`m having issues simulating this circuit on Proteus. Please take a quick look and make sure I did`nt make a goofy mistake. I`m also a novice with....
Also known as the stairstep-ramp , or simply counter A/D converter, this is also fairly easy to understand but unfortunately suffers from several....
I have successfully used a 4511 IC to make numbers 1-9 appear on a 7 segment led display, cool. Now how can I use this to say have it display a number ....
Also called the parallel A/D converter, this circuit is the simplest to understand. It is formed of a series of comparators, each one comparing the....
Actually did (do) have access to the resistors but yes measured open (disconnected from any ground source or input source)....
I wanted to use a 3. 5" jack instead of a microphone, I would need to change something else in the circuit. What would be changed in order to use an audio jack instead of a electret microphone to transmit One like this: taken from an old radio. It has 7....
Hello everyone, this is my first post here. I am building my first circuit (outside of class) and am having trouble tuning my radio. What I have: So....
I need someone to look at this. I designed this H-Bridge to run a 12VDC, 6 Amp motor. It worked great on the breadboard at 7.2 VDC running a small DC....
I have created an H-bridge PC with 4x floating gate drivers and 4x IGBTs (see attached schematic showing half of h-bridge). It works very nicely but I ....
Ok first of all I am sort of a complete noob I made a `crystal` radio circuit from parts i got out of an old busted radio, a LM386N audio amplifier ....
This circuit seems interesting and I wanted to simulate and construct it, but the problem is I do not know what do the 3 symbols in the circuit represent (1 in audio input, 1 in the middle, and 1 at the antenna). I have never come across with these symbols....
Hey all I`m new to both the forums and electronics. Recently I chanced upon a Laser Alarm System and decided to give it a go....
Hi Guys, Relatively new electronics newbie here - so thanks for your help Recently I purchased several electromechanical seven segment vane displays....
Hi everyone, A bit of background first, I know only the basics of electronics (ie: I know what components do and how to read schematics), but have no....
A diesel tractor that has a magnetic reed switch in the fuel tank to indicate low fuel. This switch is open when there is fuel in the tank, and closes when the level drops below it. When this switch closes a 12v relay is energized to disengage the fuel....
Hello, this is my first post here. I built several versions of JFET static charge detectors and I`m seeing some differences I can`t explain so I`m....
Hi, I wanted to build an IR-transmitter-receiver system to send signals to a device . Let`s say the device is a simple blue LED (just to make life....
For the following circuit of the JDM pic microcontroller programmer I need information about the PIC microcontroller pins which receive the RS232....
Hello. I am trying to design an LC Colpitts oscillator. This is the circuit. I came up with this based on the Colpitts oscillator shown on this....
Hi folks. I`m new to the forum and relatively new to diy electronics. My current project involves trying to make a battery-powered LED dimmer circuit. ....
Yes, both of those transistor types will be suitable. Is the ""sn9304"" a 2N3904? That`s a common type. You`re going to have four LEDs on at a ....
I have put all the components on the PCB, now i dont know anything about relays, so i`m having trouble connecting the power and the load?....
I get that the LM723 current sense and current limit pins (2 & 3) see a voltage created by the very low restistance current limiting resistors and that when this voltage reaches a certain value, the IC shuts down or limits the power supply output. How or....
The other thing I thought of is using a phase shift oscillator followed by an inverter to turn the sine into a square wave, but it semms a rather crude solution. I`m also looking for the schematics to a frequencydivider. I know you can use a flip flop to....
Looking for resistor value and capacitor value for low pass filter to remove RF. The application is removing undesired untuned RF from the crystal set ....
I`ve done some research and found that sender will read 100 ohms when the fuel tank is empty, so a trigger reading of 80 ohms would be ideal....
Hello, I assembled a circuit on a breadboard which is separated in 2 parts: the right part is for generating an alarm which wails. the left part is....
basically i have what is known as a bite alarm (for fishing). normally bite alarms beep as the fishing line passes over a wheel which usually has notches in it to allow some sort of optical switching making it go beep-beep-beep until the wheel stops. however....
Dear friends i need your advice about the connection diagram of the MAX4685 analog switch attached. I have two inputs VI1 and VI2 and hence we have....
Hi, I am trying to use a Panasonic microwave inverter for a project I am experimenting with. I have limited knowledge with electronics but I can work....
Originally Posted by CocaCola His clearly stated his circuit didn`t work correctly, the series was only complete when both LEDs were enabled, not the....
A while ago i run across this document which apparently tells how to wire mosfets in series to get higher voltages (pg 10-14). This is the only schematic i found so far that is actually working. The problem is that i can`t make more than 3 mosfets work, when....
That motor is rated for 6W which is 0.5 amps at 12V. I would use a 12V DC power supply rated at 1A or more. Any type will be OK. A plug-in adapter....
Hi Guys, first post to the forum here. I`m having a strange issue using an Intersil HIP4081A H bridge driver IC. I have it hooked up to an Arduino MCU ....
Hi guys, I`m building a basic RC Car. There`s an LED in the receiver circuit which lights up when I press a button on the remote. But when I connect....
Hello: First of all I must start with the classic ""I`m new to this forum so excuse if this post is in the wrong section / this was already....
The wire speed DC motor is constantly receiving about 20 volts, regardless of the state of the switch on the nozzle handle. I checked the switch with an ohm meter. The switch works fine. I even disconnected the switch from the circuit board. The motor is....
Hey guys, need some help with a project. Im pretty good with 12v electrical wiring but am having trouble figuring this out. Im building a switch panel ....
Unfortunately I don`t have a breadboard to try this out on but can modify the PCB. I`ve removed the 1K pot till I can get the strobe working and than....
hi everyone! my first post (for quite a while! lol!). i obviously haven`t still got an old enough tricky dicky catalog! in the data section there used ....
Hi guys. I`ve got a quiz buzzer circuit that is designed to output to a basic piezoelectric buzzer. What I really want to be able to do is to output....
Here`s an updated schematic with the RF Solutions receiver and some other small additions. There`s a lot of extra circuitry to deal with the signals....
HI FRIENDS, I HAVE A ANIMAL REPELLER CIRCUIT CIRCUIT DIAGRAM AS SHOWN: I HAVE WRKED ON THIS BUT NOT WORKING AS PREFERRED CAN U PLEASE CHECK THIS ONE....
The schematic is attached, I`d like to have a suggestion if any improvement could be made, in particular I`d need to add a reverse polarity connection protection. I`m not a MOSFET expert, but: from the schematic I take it that the logic level inputs (5 V)....
I am pulling my hair out since I keep destroying the Murata NMC1215SC DC/DC converters in my CPU controlled H-Bridge design. There is no obvious signs ....
I built the Electric Scooter,E-Bike PWM speed controller circuit. I can not get the oscillator to work. I checked the pc bd and is ok All resistors....
hello everyone..im need some helps i`ve construct the PWM and PPM circuit the output going smoothly but i`ve some problem im not very....
This is the giant controller used for the game Steel Battalion for the xbox. I used this schematic diagram from a guy called Alpha who did it to his....
I`m not able to get this circuit to give me full range of motion of a servo (only about 90 degrees). Maybe someone can take a look at the circuit and....
Hi all, My 6 year old son and I saw this on youtube I then pressed `print screen` from the video to cobble together this: ....
Hey everybody! I`m working on a Singing Tesla Coil for a 4-H electricity project and I just finished my first draft of the circuitry. I was wondering....
That`s a great idea to use the chips internal reference and some resistance to get the right bias on the audio; it would really reduce the parts count ..
Solar cell type Maximum efficiency Practical efficiency Notes Selenium, polycrystalline 0.7% - 1883, Charles Fritts Silicon, single crystal - 4% 1950`s....
To make your own PWM controller, start with this sawtooth generator. Run it from a 7. 5V regulated supply to make its Vpp 5V. Feed the sawtooth to one input of a comparator and the MAP voltage to the other input of the same comparator. Let the output drive a....
A way to boost the wattage of my small scale Tesla coil. I`m not getting good wattage going coming off the secondary. I`m not sure what the current or voltage is but from what i can tell is that the coils are resonant and that the output is like 100kv at....
I would like to build a board that has 1 - 120volt/600Watt input and > 3 - 120volt/200Watt outputs. The outputs we shall call A, B ....
Hey guys, I am new to the forum. I hope this is the right section. Sorry if I ask some dumb questions, I am new to circuit design. This is for my....
None of those devices is very suitable. The drivers aren`t specified to operate with 3.3V gate signals, and although the typical graph shows that a....
Hi, I`m trying to build a circuit with two key switches, where both key switches need to be closed for the current to go through. I am trying to use a ....
SCRs are unidirectional (one-way) current devices, making them useful for controlling DC only. If two SCRs are joined in back-to-back parallel fashion ....
Can anybody tell me if the output of a monostable 555 timer circuit can be used to trigger another similar timer circuit. I have shown my idea with a....
Here is a schematic that I need help understanding- On this circuit I`m assuming pin 2 is connected by a wire to pin 6 even though it doesn`t make....
I don`t believe it was ever intended to be powered off a 9V battery. They`re feeble! Under 2 hours with an Alkaline, or....
The voltage requirement the Solidus is desirous of is quite a bit higher than your circuit provides I know Chris. It was....
Build a sine wave generator. I use this schematic:. The op-amp I have used is the TL082 and the power supply of 9V. However, I do get a nasty sound, indicating that I am not getting a sine wave but rather a distorted waveform. Any idea why this is happening....
The circuit was meant to be powered by a power supply, which is why there is no transformer, rectifier, or filter capacitors on the schematic. There is no reason why you cannot add these. To use the circuit, hook it up to a power supply/plug it in. Then,....
Version V2. 9 supports also GPS-receiver with ANTARIS chipset and simultaneously using of internal temperature sensor of MS5534A and external DS1820 sensor. This version can use 24C256, 24C512 or 24C1024 EEPROMs and has an internal `bootloader` implemented.....
This is the electronic schematic of the homebuilt SONAR. Only one piezoelectric transducer is used for both transmit & receive. This transducer is switched from TX to RX via the four 4016 switches. A high gain amplifier stage & rectifier translates the....
To the left in the diagram, you find the micro memory containing up to 64 different addresses each with 15 bits (numbered 1 to 15) that we call the micro operations or MOPs for short. The MOPs control every aspect of the computer. To the left, you also find....
The single-transistor inverter circuit illustrated earlier is actually too crude to be of practical use as a gate. Real inverter circuits contain more than one transistor to maximize voltage gain (so as to ensure that the final output transistor is either in....
This schematic illustrates a real circuit, but it isn`t called a "two-input inverter. " Through analysis we will discover what this circuit`s logic function is and correspondingly what it should be designated as. Just as in the case of the inverter and....
Most ohmmeters of the design shown in the previous section utilize a battery of relatively low voltage, usually nine volts or less. This is perfectly adequate for measuring resistances under several mega-ohms (M ©), but when extremely high resistances need....
Build the circuit and measure voltage drops across each component with an AC voltmeter. Measure total (supply) voltage with the same voltmeter. You will discover that the voltage drops do not add up to equal the total voltage. This is due to phase shifts in....
The 555 integrated circuit is a general-purpose timer useful for a variety of functions. In this experiment, we explore its use as an astable multivibrator, or oscillator. Connected to a capacitor and two resistors as shown, it will oscillate freely, driving....
