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 |

Non-Inverter Amplifier LM139 (CB14242E)
The circuit below shows how to use an LM139 comparator or series equivalent as an amplifier. The...
Visible light receiver (CB7851E)
We found this receiver circuit for modulated light in a 90s Popular Electronics. Equivalent audio...
5 LED Log Scale with U257B (CB25442E)
The circuit was found in the February 1992 Radio Electronics magazine. The scale can be changed by...