power supply by rbrtschmdt ★7

0 - 9 decimal counter using 555 timet as the clock by mthompson ★5

Bridge Rectifier ★4

555 ★4

FunkyTown 555 by WorldofZAP ★3

Arduino 4-20mA sensor by step ★3

Fuzz Face pedal by Jetset Willy ★2

LM386 Op Amp Internal Circuitry by LFO ★2

Transistor ★2

Speaker ★2

H-Bridge ★2

DC boost converter by Mikatomik ★2

Arduino Music ★2

741 op-amp ic by thundermax ★2

New Circuit by andrey1978 ★2

24 Hours Clock by 0x783A ★2

3 Band Equalizer by VincenzoLuciano ★1

LM741 OA SubCircuit by LFO ★1