Preamplifier for electret (CB26249E)

This circuit allows the use of an electret microphone with a 1.5 V source. We found it in the Encyclopedia of Electronic Circuits volume 5 from 1995.

| Clique na imagem para ampliar |

Operational Bistable 2 (CB15614E)
What differentiates this circuit from the previous one (CB15613E) is the non-need to use a...
Monostable with LED (CB24416E)
Using a 74123 TTL this circuit was found in the Radio Elecronics magazine of June 1975. The power...
Colpitts Oscillator 2 (CB22387E)
The difference between this oscillator in relation to the previous one is the use of emitter...