VU meter LM3914 (CB25460E)

Found in the March 1992 Radio Electronics magazine, this circuit has two supply voltages. The maximum input voltage is 14 V.

| Clique na imagem para ampliar |

Comparator With Op. Amp. (MSB069E)
This simulation shows how to use an operational amplifier as a voltage comparator. The sample uses the...
Telephone Conversations Automatic Recording (CB17296E)
This circuit automatically activates the relay when the phone is answered, closing the record...
Vehicle Alarm (CB4867E)
This car alarm was found in an American '80s documentation. The circuit automatically activates...