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…
100W RF Amplifier with BLY94
This is a 100W RF amplifier built based on RF power transistor BLY94. Active components: BLY94 Coaxial cable length :…
UHF TV Antenna Booster
This is the circuit diagram of UHF band TV antenna booster with 15dB gain power. This low cost antenna booster…
LED Color Fade Effect
This is the circuit of LED color fade effect. Just like the name of the circuit, the light intensity of…
2 x 22W Stereo Car Audio Amplifier with TDA1553CQ
This is the circuit diagram of 2 x 22W stereo car audio amplifier. The circuit is powered by a single…
80W Power Audio Amplifier with LM12
This is the circuit diagram of 80W power audio amplifier based on power IC LM12. The circuit kit is sold…
Safer Security System Alarm
Here the circuit diagram of safer security system alarm. There are many security systems use a closed loop of wires…
15W FM RF Amplifier with 2SC2539
This is a 15W FM RF amplifier circuit which build based on RF Power Transistor 2SC2539. 2SC2539 is a silicon…
Dynamic Microphone Amplifier
Here is the dynamic microphone amplifier circuit diagram. This circuit should be perfect for dynamic microphone... Dynamic microphones are versatile…