Popular Circuits Page 31
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When testing a circuit, a source of voltage that is variable and has overvoltage shutdown is veiy useful. In this circuit, Rl is adjusted to 1 to 2 V below the eventual shutdown threshold. R2 sets the trip voltage. When this voltage is reached, the circuit....
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Originally Posted by artosalo My original claim was that pentode connected version is not optimum. NO! You wrote the Mullard 5-10 is not optimum. If....
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The TDA2005 is class B dual audio power amplifier package specifically designed for car radio application. You can easily design car radio power booster....
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The phono preamp shown has an accurate RIAA equalisation curve, is very quiet, and offers far better sonic performance than the vast majority of those seen in magazines and application notes. Like most other ESP projects, it is very tolerant of opamps but....
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This was actually used to program my Digital Voice Recorder which I made for my VI sem project. It connects to the Parallel port, and can be used to program any Atmel AVR while it is still in the system, provided the system provides a standard In System....
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It signals that the phone is in use by lighting a red LED. When the phone is not in use, a green LED is lit. It needs no external power and can be connected anywhere on the phone line, even mounted inside the phone. 4. The ring voltage on a phone line is....
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LCD2USB is a open source/open hardware project. The goal of LCD2USB is to connect HD44780 based text LCD displays to various PCs via USB. LCD2USB was meant to be cheap and to be made of easily available parts. It is therefore based on the Atmel AVR Mega8 CPU....
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Circuit works: 220 V AC by C1 Buck, DW regulator, VD whole stream, C2 filtered output 12 V DC voltage supply control circuit. IC1 time base integrated circuit NE555 and R1, Rp, C3 composed..
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A Norcold DE560 that was working fine until I turned it on this year. It`s in a boat and when I turne the refrig breaker on it, it pops immediately. is there a fuse or something on the fridge I can check Ok the only thing that will cause the circuit breaker....
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Typically such applications
require low power from the battery. With this in mind,
every feature of the LTC4100 Smart Battery charger exists
to reduce board real estate and profile requirements. The
LTC4100 is a Level 2 (slave) Smart Battery charger that....
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The following circuit Diagram of (DUAL VOLTAGE POWER SUPPLY ) can be used for Misc.. application. It requires a few components to built. The most important components of this circuit are REGULATORS. 1 : (AN) 7812 and 2 : (AN) 7912 AN7812 is the Positive....
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Precision Frequency generator 1 to 999 Hz
Precision Metronome 1 to 999 beats per minute. CMos IC1 and IC2B quad AND gate form a 2.4576 MHz crystal oscillator plus a 2400 times divider. IC3A provides further division by 16, delivering a 64 Hz stable....
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An Arduino running on 2 or 4 rechargeable NiMH AA batteries. I say 2 because I might boost up the voltage to what`s needed. My problem is that this project will sometimes be plugged in and I would like the batteries to be able to charge during that time.....
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A simple calculator, in conjunction with a COB (chip-on-board) from an analogue quartz clock, is used to make a telephone call meter. The calculator enables conversion of STD/ISD calls to local call equivalents and always displays current local call-meter....
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This is the second part of the square root algorithm. It was developed in one month during the final stages of finishing this web site and reviewing this document for publication. While Part I dealt with an empirical discovery for a sequential algorithm to....
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Ignore components C1, C2, R3. The MOSFET, Q1, switches on creating a short circuit between the right hand side of the inductor, L1, and 0V. Thus a fixed voltage of 3. 3V is applied across the inductor, so its current will ramp up according to When the MOSFET....
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Add this to the above circuit to get a programmable trigger sequencer. Includes an optional audio modulation stage...
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Circuit works: an integrated circuit lC (NE555) and R, RP, C3 substandard elements constituting around astable multivibrator, lC 3 feet square wave oscillation signal output from the current limiting resistor R2 is added to the TRIAC vs the control terminal,..
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To compile this software just copy and paste it into any current or newer version of arduio software. To compile to check for error click the play like button and wait for the software to process. If any errors is found, it should indicated at the bottom of....
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10A variable power supply circuit is symmetrical in the figure below, can provide symmetrical output voltage of ± 1. 2 volts to ± 30 volts DC with a current maximum of 10A. 10A variable power supply circuit uses symmetrical variable voltage regulator LM317....
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The circuit described here is of an economical smooth variable power supply which offers 0V to 24V. It provides all controls and short circuit....
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Door Phone , LM 386 is just right for a door phone application. It is very useful application in the present urban households. One condenser microphone and a speake....
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This is a very simple circuit utilising a 555 timer IC to generate square wave of frequency that can be adjusted by a potentiometer. With values given the frequency can be adjusted from a few Hz to several Khz. To get very low frequencies replace the 0.01uF....
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12 Volt / 2 A Switching Power Supply power supply. Go to that page to read the explanation about above power supply related circuit diagram...
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the decision of designing a 9V powered Headphone Amplifier was finally taken. The main requirement was to power the circuit by means of a common, PP3 (transistor radio) alkaline battery. The appearance of the 5534 low-noise op-amp at a reasonable price was....
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The main component used is the ACS712 sensor from Allegro MicroSystems to measure the current. It provides economical and precise solutions for AC or DC current sensing in industrial, commercial and communications systems. Located near the surface of the die....
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By the transistor VTi, VT2 composition self-excited multivibrator output signal VT3 put large after a thyristor trigger pulse. Adjustment potentiometer RP, can change the oscil..
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The output of a video amplifier is differentiated before being fed to a Schottky comparator. The propagation delay is reduced to typically 10ns. The output pulse width is set by the value of C, lOOpf giving a pulse of about 90ns duration.
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Circuit shown in Figure is the use of low-drift current source circuit MIC2951 constituted its current source output current values are: ..
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This is a typical stereo application circuit schematic of the ADAU1592, a 2-channel, bridge-tied load (BTL) switching audio power amplifier. You can apply ADAU1592 on flat panel televisions, pc audio system and/or mini-components applications..
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High power IGBT modules employ hybrid IC gate drives including protection circuits that implement desaturation detection or real time control....
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High voltage switching stabilized voltage supply circuit is shown in the diagram. It is the switching power supply of 80P type color TV. It adopts auto-excitation, PWM circuit. Its output is isolated with power system. This power supply has 110V and 18V DC....
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This design reconfigures the APD-bias IC, IC1, to allow its low-voltage DAC output to modulate the high-voltage, current-sense feedback via a high-voltage-output transconductance stage comprising Q2 and Q3. These two complementary transistors provide....
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Stepper motor control circuit Stepper motor control circuit diagram using TLE5206 for remote control car....
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The IR remote control for the system is also based on
a PIC10F200. It uses the wake-up on change function
of the I/O to wake it whenever a button is pressed. It
then generates one of two different modulated outputs,
depending on which button was pressed.....
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An amplifier is something that amplified the voltage on a circuit. The most basic kind is an operational amplifier, and this video will show you how these work and how to use them in your electronics. As an example you`ll learn how to make a microphone....
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I`ve had this old amp for about years, and friend of mine has volunteered to do the work to restore it. This is a Webster-Chicago 166-1 amplifier....
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The following circuit shows about AM Broadcast Detector Circuit Diagram. Features: with 10KHz notch filter, fits well with a low voltage single ....
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At this circuit you can give a variety of utilities, from an alarm, to open a door, turn on a light in the garden or courtyard, and so on. Your imagination has the last word. HOW IT WORKS: The operating principle is based on the properties of a photoelectric....
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This is the circuit diagram of Line Follower / Line Tracker robot. The circuit taken from the tutorial documentation. You may download the full tutorial at the end of this article. The line follower robot use 8 pieces of proximity sensor module. The sensor....
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I have a 10 light LED bargraph, I want to make the LED`s light one after the other until all the LED`s are lit, and then have the circuit cycle back down until all the LED`s are off again. A simpler (analog) way is a LM3914 - Dot/Bar Display Driver operating....
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The IC is an alignment-free multistandard (PAL, SECAM and NTSC) vision and sound IF signal PLL demodulator for positive and negative modulation, including sound AM and FM processing. A special function is implemented for the demodulation of FM radio signals....
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A simple and efficient PWM lamp dimmer using timer IC NE555 is discussed in this article. Yesterdays linear regulator based dimmerscan only attain a maximum efficiency of 50% and are far inferior when compared to the PWM based dimmers which can hit well....
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As illustrated, 555 and R4, R5, C1 and so connected as a controllable multivibrator mode, which force reset terminal 4 feet to explore pen, control terminal 5-pin external level high and low logic level input related...
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Traditionally, high quality reception of VLF natural radio signals has involved driving or hiking out to remote locations far from civilisation, in order to find an environment free of pollution by artificial radio signals. I`ve lost count of the times I`ve....
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This is a simple single-zone burglar alarm circuit. Its features include automatic Exit and Entry delays and a timed Bell/Siren Cut-Off. It`s designed to be used with the usual types of normally-closed input devices such as - magnetic reed contacts - micro....
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The Motor30 board is an H-bridge for delivering up 30 Amperes of current to a motor. In addition, it has an on-board hall-effect shaft angle sensor. The module is fully opto-isolated to keep motor noise from leaking across to the logic power supply...
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Have a proper look at the Kapanadze video in the transparent box and see that the vertical coil has copper tape windings on it resulting a capacitor that captures the environment particles with the help of the high voltage. I have done some experiments with....
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You can expect 100mA output from LT1303 based circuits
and 300mA from the LT1372 circuit without modification.
All of the circuits feature output disconnect; in shutdown
the outputs fall to 0V...
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This op amp offers a straightforward method of developing a single-polarity stable voltage source (see the figure). TVansi..
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Ultra Fast Battery Chager for Nickel-Cadmium battery cells [NiCad] which will be discussed in this article is Fast NiCad Battery Charger, called the Ultra Fast Charger Battery Charger NiCad because it can make filling fast NiCad Batteries Cell. A battery....
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TLD 5085EJ is a smart LED buck converter with an integrated power switch capable of driving up to 1. 8A load current with excellent line and load regulation. This device is primarily aimed at stepping down input voltage and regulating a constant LED current.....
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Many companies online claim that they are making a shield/jammer for rfid and since Rf is like RFID and it gives off a frequency of 58khz it should be easy to jam It is against the law to jam radio communications. Maybe if you are in the middle of a huge....
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A `micro power solar engine` has been a goal since my introduction to BEAM Robotics. I believe that if there wasn`t one before, I there is one now. What I`m presenting to you looks very similar to one of the circuits found in Steven Bolt`s web pages.....
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This regulated power supply can be adjusted from 3 to 25 volts and is current limited to 2 amps as shown, but may be increased to 3 amps or more by selecting a smaller current sense resistor (0.3 ohm). The 2N3055 and 2N3053 transistors should be mounted on....
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The HIP6302 Multiphase PWM control IC together with its companion gate drivers, the HIP6601, HIP6602 or HIP6603 and Intersil MOSFETs provides a precision voltage regulation system for advanced microprocessors. Multiphase power conversion is a marked....
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Circuit schematic of the UDC containing only dispersive components. The two low-frequency series LC resonators (with LA=LB and CA=CB) are fed by two input semi-infinite transmission lines, A and B, and parametrically coupled to a third high-frequency series....
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This diagram tells us about how to use L200 device for the speed control of permanent magnet motors. By means of R1 and R2, we can obtain the desired speed,....
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Here is a simple non-contact AC power monitor for home appliances and laboratory equipment that should remain continuously switched-on. A fuse failure or power breakdown in the equipment going unnoticed may cause irreparable loss. The monitor sounds an alarm....
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While talking to a distant subscriber on telephone, quite often we feel frustrated when the voice of the distant subscriber is so faint that it is barely intelligible. To overcome the problem, circuit of an inexpensive amplifier is presented here. It can be....
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Energia is a rapid prototyping platform for the Texas Instruments MCU Launchpad. Energia is based on Wiring and Arduino and uses the Processing IDE....
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Edge Avoider Robot (EAR) is a mobile device, which senses and avoids the absence of surface below it....
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It`s built on a breadboard and it sounds exactly how it should sound (damped sine wave, big 808/909-kind of kicks). However it`s noisy. I`ve tried adding a big electrolytic cap between V+ and GND. It makes difference yet it`s still very noisy. Also, the....
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Here is a hobby circuit of a multi channel remote control system, by which you can control 8 different appliances. The main sections of this multi channel remote control circuit are the RF receiver and transmitter. By using this circuit we can control 8....
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Diode and capacitor can be used to clamp an AC signal, shift the level into positive region for all cycle. Sometimes this condition is needed, to have positive....
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By an integrated power amplifier TDA2040 composed OTL power amplifier circuit is shown, which uses +3V single supply as the working voltage. This circuit voltage gain 30 dB (32..
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Adjustable thermostat controller circuit is very long use in everyday life, such as constant temperature soldering iron, as shown in FIG. TMP17 by the REF01E to provide a high ..
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Man Machine Sound generator is different type of project in the series of alarm project circuit diagram with description of various type of alarm project ...
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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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THE L3 WIRE - AMPLIFIER TYPE NH19-6112 P. REWIERSMA NIKHEF-H AMSTERDAM FEBRUARY 1986 Abstract: This note describes in detail the design considerations and performance of the hybrid linear amplifier for the muon detector in the LEP L3 experiment. The L3 WIRE....
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Your Auto Repair Mercedes 300SD Backup Lights...
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This is a car alarm simulator which using the LED as a simulation output. This simple circuit can tell you whether your car is running or not by detecting the voltage difference when the car is on and off. This occurs because when your car This is a car....
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Figure 4-27 (b) line than in Figure 4-27 (a) line more than a capacitor, to improve and increase the output current waveform DC voltage. Figure 4-27 (b) line shown can be used ..
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A very simple battery charger circuit is described in this article, which uses just a single transistor for the voltage detection as well as for automatically disconnecting the battery from the supply when it gets fully charged. This adjustment becomes the....
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The PC Standby Detector is a small circuit to disable the power LED when the PC is in standby mode....
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A crowbar circuit is a power supply protection circuit that rapidly short-circuits ("crowbars") the supply line if the voltage and/or current exceeds defined....
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The charger"s output voltage is adjustable and regulated, and has an adjustable constant-current charging circuit that makes it easy to use with most NiCad batteries. The charger can charge a single cell or a number of series-conoected cells up to a....
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Now-a-days Electronic voting machines are being used effectively. The confidence of the voter in its flawless working is gradually building up and these machines are thus becoming quite popular throughout the country.
Features of the electronic voting....
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A demo of external interrupts in AVR (Atmega8) micro controller with circuit diagram and C code/program as ISR (interrupt service routine)....
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Logic pen also known as logic detection probe, it is a common tool in the digital circuit detection logic state of each point. Digital circuit logic state is generally divided into three types: namely, a high level "l", the low level "0"..
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The general idea is to space the time internals to increment the DAC output values. There would be 256 levels since there are 8 digital outputs from the Arduino board. Therefore, for an 8-bit, 50s ramp time for example, the way to generate a digital ramp ....
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This easy to build FM transmitter bug can transmit voice to exceptionally good range. Tune trimmer to hear the signal to your near radio. Transmitter frequency range is 88-108 MHz. Max current consumption is 30mA. You can power the fm transmitter bug with a....
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Desheng 119 700 type FM, TV sound, medium wave, short wave high sensitivity l2-band stereo radio circuit diagram as follows: ..
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used to maintain a deep cycle battery from a solar panel. This is a combination digital clock timer and solar panel charge controller. Component: ....
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A simple synthesised 13cm ATV exciter my thoughts turned to what could be used as a power amplifier. The exciter produces about 10mW perhaps enough to drive some sort of MMIC or hybrid amplifier. The problem with 13cm is that at 2. 3 GHz and beyond devices....