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

power supply by rbrtschmdt ★5

Bridge Rectifier ★4

Arduino 4-20mA sensor by step ★3

555 ★3

FunkyTown 555 by WorldofZAP ★3

Arduino Music ★2

New Circuit by andrey1978 ★2

LM386 Op Amp Internal Circuitry by LFO ★2

Fuzz Face pedal by Jetset Willy ★2

741 op-amp ic by thundermax ★2

DC boost converter by Mikatomik ★2

24 Hours Clock by 0x783A ★2

Speaker ★2

H-Bridge ★2

555 Led Power Supply by Sumesh ★1

Sub74164 by VinceLuc ★1

Transistor ★1