This is high fidelity, high quality 25W HiFi audio amplifier circuit delivers great audio performance. You don’t need pre amplifier circuit for this design since it can be directly connected…
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18W Audio Amplifier
This is the circuit diagram of 18W audio amplifier. The circuit is quite simple and inexpensive to built. It uses a pair of power transistor TIP41A and TIP42A for single…
Ultrasonic Sensor Switch
…to sense ultrasonic signals. It also uses a two-stage amplifier, a rectifier stage, and an operational amplifier in inverting mode. Output of op-amp is connected to a relay through a…
10 Dancing LEDs
…Power Dual Op-amp IC2____________4017 Decade counter with 10 decoded outputs IC M1_____________Miniature electret microphone SW1____________SPST miniature Slider Switch B1_______________9V PP3 Battery Clip for PP3 Battery Additional circuit parts (see Notes):…
Hobby Power Supply
…part number specify the output voltage, eg. 05, 06, 08, 10, 12, 15, 18, or 24. The 7800 series provides up to 1 amp load current and has on-chip circuitry…
25W Hi-Fi Audio Amplifier based LM1875
Here the circuit diagram of 25 watt Hi-Fi (high fidelity) audio amplifier that build based on single power amplifier IC LM1875 that should be run using heatsink attached on its….
One Chip AM Radio Receiver
…The MK484 we use is a Japanese copy of the original ZN414. It contains an RF amplifier, active detector and automatic gain control (AGC to improve sensitivity) all in a…
0-24VDC Digital PIC Power Supply
…seize to power supply amps) DZ1 = 1N4751 30V ZENER IC1 = LM317KCS TO220 IC2 = LM337LZ TO92 IC3 = LT1491CN special HV opamp, do not substitute IC4 = PIC16F876A…
Courtesy Light
…your room. When you turn off the lamp with a switch on the circuit, the lamp will remain lit in a certain period of time, before the lamp really switched…
Turbo Bass
…circuit is an active circuit in which the incoming audio signal from the input will be strengthened in the first op-amp. The second op-amp that will filter out the bass…