Up to 10 minutes timer (CB21435E)

Details: Written by: Newton C. Braga

We found this circuit in an old General Electric documentation. The load maximum power depends on the SCR.

| Clique na imagem para ampliar |

Circuit Bench

Piezoelectric Transducer Amplifier (CB15928E)
This amplifier, suggested by National Semiconductor, is characterized by its very high input...
Offset Adjustment on an Amplifier with the LM139 (CB14245E) In the figure we have the way of adjusting the input offset in an amplifier with gain 100 using a comparator LM139. The circuit is from National Semiconductor's Linear Applications
Offset Adjustment on an Amplifier with the LM139 (CB14245E) In the figure we have the way of...
1.5 V LED Flasher (CB20423E)
This circuit causes an LED to blink from the 1.5 V supply thanks to the use of a voltage doubler. The...