Voltage to Frequency Converter with Potentiometer (CB25385E)

We found this circuit in the June 1991 issue of Radio Electronics magazine. The circuit can be used with a resistive sensor or in demonstrations.

| Clique na imagem para ampliar |

Bistable Multivibrator (CB9925E)
This circuit using an operational amplifier was found in old American documentation. It can be...
Simple transistor tester (CB23746E)
If the circuit oscillates, emitting sound, it is because the transistor is good. This simple...
Telephone Amplifier with TDA7052 (CB990E)
Like the previous circuit, this is used in the analog part of the telephone lines. The same...