Voltage Controlled Oscillator 8038 (CB20824E)

This circuit was obtained in an old documentation. The 8038 integrated circuit is not a common component today.

| Clique na imagem para ampliar |

Capacitance meter (CB22163E)
Found in an English documentation from 1989, this circuit uses components common today. The...
Simple capacitor test (CB7060E)
The LED frequency flashes depends on the value of the capacitor tested according to the table. We...
Hartley crystal oscillator (CB7541E)
Found in a Popular Electronics from the 90s, this circuit generates a signal that depends on the...