Top Circuits Page 202
- Page 202
-
Using the LM3434 adaptive constant on-time DC/DC buck (step-down) constant current controller can be designed a very simple high power led driver application. The LM3434 provides a constant current for illuminating high power LEDs. The output configuration....
-
-
LTM8042 combines a boost power topology with a unique current loop to operate as a constant-current source. The PWM input provides as much as 3000:1 LED dimming, while 10:1 analog dimming can be accomplished by a single resistor or analog voltage applied to....
-
A very simple LED torch can be designed using the NSI45090JDT4G adjustable constant current regulator (CCR) designed by ON Semiconductor, using extreme few external components. NSI45090JDT4G device is designed to provide a cost effective solution for....
-
Using the LM3404 are monolithic switching regulator can be designed a very simple constant current driver for high power LEDs. This LED driver electronic project is ideal for automotive, industrial, and general lighting applications. Hysteretic controlled....
-
This dimming controlled LED driver electronic circuit require an input voltage of 36 volts and will provide at output a voltage of 24 volts at a maximum current of 700mA ..
-
A simple white LED driver circuit can be designed using the LM3530 high efficiency white LED driver IC with programmable ambient light sensing capability and I2C compatible interface. LM3530 LED driver can control up to 11 series white LED`s and can be used....
-
-
Using the LM3551 and LM3552 are fixed frequency, current mode step-up DC DC converters with two integrated NFETs we can design a very simple and high precision LED brightness control system. The devices are capable of driving loads up to 1A from a....
-
For this led driver electronic project you will need a DC power supply circuit that provide an output voltage between 2. 7V and 5. 5 volts ( supply voltage must be applied between Vin and GND. The T/F jumper connects the T post to the middle post of the....
-
The LT3754 16 channel LED driver with a step-up DC DC controller designed by Linear Technology is capable of driving up to 45V of LEDs. Each channel of the LT3754 led driver contains an accurate current sink with ±2. 8% current matching. ..
-
This white led driver circuit circuit drives as many as four white LEDs in parallel from a 3. 3V source, and adjusts the total LED current from 1mA to 106mA, in 64 steps of 1dB each. To control the LED brightness, op amp U2 monitors the difference between....
-
The L293 is designed to provide bidirectional drive currents of up to 1 A at voltages from 4. 5 V to 36 V. The L293D is designed to provide bidirectional drive currents of up to 600-mA at voltages from 4. 5 V to 36 V. Each output is a complete totem-pole....
-
-
Using the LM628 LM629 dedicated motion-control processors can be designed a variety of DC and brushless DC servo motors, and other servomechanisms applications. The power path of this electronic project, motor driver is based on the LM12 high power....
-
This simple DC servo motor circuit design that can be used in various electronic projects. As you can see in the circuit schematic this Dc servo motor driver schematic circuit use just one integrated circuit and other few external electronic components. With....
-
The L620x is a monolithic full bridge switching motor driver realized in the new Multipower-BCD technology which allows the integration of multiple, isolated DMOS power transistors plus mixed CMOS/bipolar control circuits and is available in many versions :....
-
A very simple forward reverse motor control driver electronic circuit project can be designed using the LB1948M 2 channel low saturation voltage forward reverse motor control driver IC. LB1948M motor driver is optimal for motor drive in 12V system products....
-
Using the LMD18200 3A H-Bridge designed by National Semiconductors for motion control applications can be designed a very simple motor controller electronic project. Ideal for driving DC and stepper motors; the LMD18200 accommodates peak output currents up....
-
As you can see in the circuit diagram, this electronic project require few external electronic parts. The maximum output current that can be provided by this PWM current-control stepping motor driver IC is up to 1. 5 ampere. The setting conditions for the....
-
Using a MC14093 CMOS type IC, a quad 2-input NAND Schmitt trigger circuit can be designed a very simple pulse width modulation circuit controller electronic project. This pulse width modulation controller electronic project is very simple and require few....
-
The PBL3717A motor stepper driveris a monolithic IC which controls and drives one phase of a bipolar stepper motor with chopper control of the phase current. Current levels may be selected in three steps by means of two logic inputs which select one of three....
-
Using the TDA7275A linear integrated circuit manufactured in a minidip plastic package can be designed a very simple speed regulator electronic project that can be used for speed regulation of small DC motors . TDA7275A DC speed controller project is....
-
-
A very lab adjustable power supply that can provide an output voltage between 0 and 60 volts can be designed using this circuit diagram. This lab power supply can be designed with LM723 chip or for higher output voltages, with L146. Output current is also....
-
Using high voltage transistors can be designed a DC power supply that can provide a supply voltage between 10 and 300 volts which can be adjusted with the potentiometer P1. Transformers typically used in such sources have several windings of high voltage and....
-
Burst Mode operation maintains high efficiency at light loads by reducing IC quiescent current to 120 A. Light load efficiency is also improved with the reverse inductor current inhibit function which supports discontinuous operation. Additional features....
-
A very simple high efficiency switching mode buckboost power supply circuit can be designed using the LTM4609 switching regulator IC. This switching power supply circuit will provide an fixed output voltage of 12 volt. As you can see in the schematic....
-
Using the LTC3810-5 synchronous step-down switching regulator controller can be designed a very easy and simple 12 volt switching power supply electronic project using few external electronic parts. LTC3810-5 synchronous step-down switching regulator....
-
A very simple dual 15 volts power supply electronic circuit project can be designed using the LT3512 switching regulator IC manufactured by Linear Technology. This simple 15 volts DC power supply electronic project operates from an input voltage range of 36....
-
Using the ISL8012 high efficiency, monolithic, synchronous step-down DC DC converter can be designed a very simple DC DC converter electronic project that can support a maximum output current up to 2A (continuous output current ) from a 2. 7V to 5. 5V input....
-
Using the LT3694 monolithic, current mode DC DC converter can be designed a very simple step down converter that will can support a maximum output current of 2. 6A. LT3694 switching step-down converter (capable of generating up to 2. 6A at its output) has....
-
Using the LT3692 dual current mode PWM step-down DC DC converter circuit with two internal 3. 5A switches can be designed a very simple power supply circuit, that can be used for various electronic circuits applications like : distributed supply regulations....
-
Using the LTC3113 fixed frequency, buck-boost DC DC converter can be designed various power supplies circuits that operates from input voltages above, below or equal to the output voltage. The topology incorporated in the IC provides low noise operation,....
-
This power supply electronic circuit is a high current 5 volts power supply circuit that use a 7805 voltage regulator and some classic electronic components. T1 acts as a current limiter. Once the voltage on R2 + R3 is greater than 0. 6 0. 7 V, the....
-
Using TOP269EG off-line switcher IC, (U1), in a flyback configuration can be designed a very simple high efficiency notebok laptop power adapter. TOP269EG IC has an integrated 725 V MOSFET and a multi-mode controller. It regulates the output by adjusting the....
-
This ADP2323 DC DC converter will provide two output voltages at two maximum output current. On the first channel this electronic circuit will provide a 5 volt output voltage at a maximum output current of 2 Ampere and at the second output channel this....
-
A very simple 5 volt switching power supply electronic circuit project can be designed using FAN302HL highly integrated PWM controller integrated circuit, that provides several features to enhance the performance of general flyback converters. The....
-
Using the FAN7710 Ballast Control IC for Compact Fluorescent Lamps developed using Fairchild`s unique highvoltage process and system-in-package (SiP) concept can be designed a very simple low cost fluorescent lamp driver electronic project. The FAN7710....
-
Using the ISL6185 USB power controller family can be designed a very simple USB power supply electronic project that provides fully independent overcurrent (OC) fault protection for two or more USB ports. This product family consists of sixteen individual....
-
Using the ISL9440 quad-output synchronous buck controller IC can be designed a very simple high efficiency electronic circuit power supply, that will provide 4 different fixed output voltages. ISL9440 synchronous buck controller circuit integrate 3 PWM....
-
LM317HV adjustable regulator is capable of supplying in excess of 1. 5A over a 1. 2V to 57V output range. The design of these high current power supply is very easy, because the LM317HV require just few external resistors to set the output voltage. Further,....
-
A very simple split power supply circuit project can be designed using this schematic diagram which is based on a LM380 audio power IC. The regulation of the output voltage depends of the upon circuit feeding the LM380. The power dissipation is around 1 watt....
-
A very simple high efficiency switching power supply electronic circuit project can be designed using the LMZ13608 8A regulator. This 8A switching power supply regulator electronic project based on the LMZ13608 has an very high efficiency and require few....
-
A very simple 16 volt switching power supply electronic circuit can be constructed using this circuit diagram that is based on the MAX668 constant-frequency, pulse-width modulating (PWM), current-mode DC-DC controller that is designed for a wide range of....
-
This switching power supply circuit diagram is based on the MC33374 high power voltage switching regulator IC manufactured by Motorola Semiconductor. This MC33374 switching power supply circuit will provide a maximum output power around 90 W and require few....
-
This 5 volt regulated power supply circuit project is designed using the NCP3155 DC DC switching regulator with fully integrated power switches and full fault protection. This 5 volt regulated power supply circuit project require few external electronic....
-
In some electronic projects you will need an unusual regulated voltage, unusual, because the voltage required is very small and you can not use zenner diodes or some other tricks due of a compact design. In that case you can use this voltage regulator....
-
This RS232 power supply circuit diagram is an simple RS-232 Line Driver Power Supply, that operates from an input voltage as low as 4. 2V, and delivers an output of ±12V at ±40 mA with an efficiency of better than 70%. This RS232 power supply circuit....
-
Using the LTM8008 Module SEPIC converter with six post regulators can be designed a very simple compact power supply electronic project, that has six outputs that can provide different output current for some of outputs. The SEPIC controller`s fixed....
-
A very simple supercapacitor charger electronic project can be designed using the LTC3625 IC designed by Linear technology to charge two supercapacitors in series to a fixed output voltage (4. 8V/5. 3V or 4V/4. 5V selectable) from a 2. 7V to 5. 5V input....
-
A symmetrical power supply, can be designed using this circuit diagram. This symmetrical power supply is designed using a simple operational amplifier and some classic electronic components Resistances R1 and R2 form a high impedance voltage divider.....
-
A very simple active antenna can be designed using this electronic circuit diagram. This active antenna is based on transistors and other few common electronic components. Because in practice of frequency short-wave reception, the general rule is that if the....
-
T1 transistor must be BF200 type (or similar ) and the other transistors can be BF214 type. For high efficiency, the antenna amplifier must be placed at a small distance from antenna. This amplifier circuit can be powered using a power supply that supply an....
-
applications in the 2400 MHz ISM band. This two stage RFIC amplifier is off-chip matched to provide optimum performance for a variety of applications. Operating from a 5 volt supply, the PM2107 can produce 1 watt of saturated output power with 45% typical....
-
This fm transmitter circuit is very simple and it has a acceptable transmission. The signal transited from this fm transmitter circuit can be received at almost 300 meters in open air. The circuit require a 3volts operating voltage and can be tuned anywhere....
-
This antenna amplifier is very useful for 35kHz-150Mhz frequency band. This antenna amplifier circuit is based on transistors and has a low 3dB non-linearity and a high gain of 43 dB. The input and output impedance for this rf amplifier is 75 ohms. All used....
-
The tuned coil L1, has two output tapping for the antenna connection, marked "A" and "B". These are both low-level outputs and you choose which tapping you want to use ( stable low range, or more unstable but higher range). Tap B (2. 5%) takes just a very....
-
This circuit is very similar with a car radio controlled toy with seven control functions: forward, forward-left, forward-right, backward, backward-left, backward-right, and stop. Also you can use this radio frequency circuit for some other electronic....
-
This antenna selector circuit diagram electronic project is designed using common electronic components and allows switching between two FM antennas via a logic signal. Gates IC1b and IC1a provide switching and interface between the logical form of 5 and 12....
-
This antenna selector circuit diagram uses PIN diodes which eliminate disadvantages of mechanical switches (especially at high frequency current) PIN diodes can be used which are ideal for this purpose. Resistance diodes such changes linearly in a wide range....
-
Using BA1404 can be designed a very simple and useful fm stereo modulator electronic project. This BA1404 fm stereo modulator device works in FM broadcast band ( 75- 108MHz) and require few external common components. The BA1404 fm stereo modulator Ic....
-
This stereo FM stereo modulator circuit use the BH1417F FM stereo transmitter IC which consists of a stereo modulator for generating stereo composite signals and a FM transmitter for broadcasting a FM signal on the air. The stereo modulator generates a....
-
A very simple FM CB radio receiver can be designed using this electronic diagram below. This FM CB radio receiver circuit is designed using an TCA440 integrated circuit. The receiver works with a intermediate frequency of 455kHz. Input filter is 27MF ceramic....
-
As you can see in this FM IF MW radio receiver circuit schematic the LA1260 ic can be used in AM FM radio receiver electronic projects. LA1260 has integrated in the package many functions and features that are needed for radio receiver applications. high S/N....
-
This portable am fm radio circuit is designed using the LA1800 IC and some other external components. As you can see in this circuit diagram the LA1800 manufactured by Sanyo Semiconductors, require few additional components. Also the output signal is driven....
-
A very simple FSK demodulator for the 2025 Hz and 2225 Hz can be designed using the LM565 which is a general purpose phase locked loops IC containing a stable, highly linear voltage controlled oscillator for low distortion FM demodulation, and a double....
-
Tuning stage of this long wave radio and medium wave radio receiver also serves as active antenna that can be favorably positioned to get the best reception possible. Circuit is completely separate from the receiver, which consists of demodulator that....
-
A very simple FM transmitter circuit can be designed using MC2833 integrated circuit, designed for cordless telephone and FM communication equipment. It includes a microphone amplifier, voltage controlled oscillator and two auxiliary transistors. The final....
-
This MK484 AM radio circuit provides a complete solution including : RF amplifier, Detection and AGC circuit (automatic gain control ), which requires only a few external components to give a high quality AM Tuner. The circuit has an input impedance of....
-
Oscillating circuit (coil) are made on a ferrite bar. If you wish to listen long waves winding "1-2" has 135 turns and 3-4 has 20 turns. If you wish to receive medium wave winding "1-2" has 75 turns, and "3-4" has 7 turns (wire used must be CuEm 0. 15mm). In....
-
By making this RF amplifier small power transmitters of 200 mW, can be transformed into a power transmitters reasonable, ranging between 2 and 3 W. The circuit is very simple. Network output filter suppresses noise by at least 55 dB. Amplifier is suitable....
-
This circuit responds to RF signals bellow the standard broadcast band to over 500MHz and provides an visual, and audible indication when the rf signal is detected. By adjusting the bias of D2 with the R2 potentiometer the circuit can detect low power or....
-
This electronic rf detector electronic project is designed using common transistors and other few common electronic parts. This rf detector responds to RF signals bellow the standard broadcast band to well over 500 MHz and provides an visual, and audible....
-
An RF field detector circuit that can be used in measurement and verification stage power antennas and transmitters can be designed using some transistors and common electronic components. This RF field detector circuit is designed with a radio frequency....
-
Using the RF2126 high-power, linear amplifier IC manufactured by RFMD can be designed a very simple and high efficiency amplifier for 2. 45 GHz ISM applications such as WLAN and POS terminals. The part will also function as the final stage in digital PCS....
-
This Am radio receiver circuit is based on the TDA1083 radio IC that can be used to build a simple MF band radio. This AM radio schematic circuit based on the TDA1083 will work in 300kHz 3MHz frequency range. This AM radio receiver circuit is very simple and....
-
The TDA7000 has an FLL (Frequency-Locked-Loop) system with an intermediate frequency of 70 kHz and the selectivity is obtained by active RC filters. The only function which needs calibration is the resonant circuit for the oscillator (for the reception....
-
TDA7088 contains a frequency-locked-loop (FLL) system with an Intermediate Frequency (IF) of about 70 kHz. For supplying this circuit we can use an 3 volts battery cell or a regulated power supply. ..
-
The pilot detector output is designed as an open collector output, therefore an external pull up resistor is needed. To force the decoder to "MONO" Pin 19 has to be clamped to a voltage below 0. 8V. ..
-
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....
-
Using TEA5551T monolithic integrated radio circuit can be designed a AM radio receiver circuit which is designed for use as a portable radio receiver with headphones. The TEA5551T radio receiver circuit contains all is needed for a AM radio receiver circuit....
-
A very simple TV audio video transmitter circuit can be designed using this schematic diagram. This TV audio video transmitter circuit can be used to transmit video signals from VCR ( or some other device ) to a TV without using any cable. Video signals....
-
This UHF amplifier circuit electronic project can be useful in situations where the TV signal is weak. The UHF amplifier circuit has a gain of 10-15 dB in a frequency range between 400 and 850 MHz. To obtain optimum performance and good reliability, the PCB....
-
This varactorless high frequency modulator electronic project, must be powered from a simple DC 3 volt power source ( you can use a 3 volt battery). Traditionally, high-frequency oscillators are frequency-modulated by using a varactor. However, varactors....
-
This RF antenna amplifier can be used for high frequency and VHF band ( for radio and TV) and will provide a 22 dB gain. This RF antenna amplifier electronic project has a very low noise, under 1. 6dB. L1 coil has a 6uH value, but can be used any coil for....
-
This level liquid sensor electronic circuit diagram is based on a common Ca3410 operational amplifier IC. This level liquid sensor electronic circuit use two plates sensors ( two probes ), one for the high level an one for low level. If the level of the....
-
This fluid level sensor circuit is designed for using an ac sensing signal to eliminate electrolytic corrosion on the probes. The ac signal rectified is used to drive T1 transistor that drives a 12 volt relay, that can activate or stop some device. R2....
-
This humidity detector circuit diagram is very simple and uses few components and can be used for activation of an electronic devices when the detector senses a certain humidity. The sensor is constructed from two pieces of copper placed at a short distance....
-
Circuit diagram is very simple and works as follows: N1 Schmitt trigger works as an oscillator and produce a frequency of about 1 kHz. If in the tank is still enough water, then alternative voltage go from electrode A to electrode C. After rectified of....
-
This ice warning and lights reminder electronic project circuit diagram will tell a driver if his lights should be on and will warn him if the outside temperature is nearing zero by lighting a LED and sounding a buzzer. Using the VR1 you can adjusts....
-
The ICL7106 Integrated circuit contain all the active circuitry for a 3 1/2 digit panel meter (DPM) in a single chip. It was designed to interface directly to a liquid crystal display (LCD). The potential difference across a silicon diode is dependent on its....
-
This infrared detector circuit is designed using the PID20 integrated circuit manufactured by Siemens (which converts thermal radiation into electrical impulses), an operational amplifier and a few electronic components. The output signal at pin 3 is....
-
This ion detector circuit detects static charges and free ions in the air. This ion detector circuit can be used for detecting presence of free ions, static electricity or high voltage leakage. Antenna used in this project is a short whip antenna and the R3....
-
A very simple Ionization Smoke Detector with Interconnect and Timer alarm circuit can be constructed using the A5367 low-current, CMOS circuit that provides all of the required features for an ionization-type smoke detector. A very nice thing at this....
-
This light alarm schematic circuit is designed using some common electronic parts, as you can see in the circuit diagram bellow. This light alarm schematic circuit project will sound as soon as the drawer is opened and light falls on the Darlington....
-
This Light Dark switch activated relay circuits schematics are the simplest electronic circuits that can help you to activate other electronic device at the light or dark. This Light Dark switch activated relay circuits are very simple and require one....
-
This liquid detector circuit diagram is designed using common electronic components. The liquid detector may operate an active buzzer, to make a sound when is reached a certain level of water. Because water sensor and control circuit for buzzer are located....
-
The liquid detector is a detector with liquid alternating voltage and can be built using some common electronic components. Voltage alternative for this circuit is made using a gate with Schmit trigger function, which works as an alternative power....
-
This smoke detector electronic project is designed using LM1801 and common electronic parts. Smoke detector circuit diagram below does not use ionization detection, gas or optocouplers it use two photoresistors (LDR`s) and an LED. The circuit uses a pair....
-
This LM1830 low level detector can use an audio indication (speaker ) or a visual indicator (LED- light emitting diode ) that will light when the level is too low. This low level detector circuit will generate a 500 Hz audio signal when the level is low.....
-
This metal detector electronic project schematic circuit is designed using a simple 555 timer integrated circuit. As you can see in the schematic circuit, this metal detector electronic project requires few external electronic parts. ..
-
This metal detector circuit electronic project is an very simple circuit that is based on common electronic parts. This metal detector circuit electronic project is based on transistors and will provide an visual indication using a LED and an acoustic sound....