Differential voltage reference (CB8677E)

Using neon lamps, this circuit from a 1969 publication provides 17 V of maximum voltage or else adjustable.

| Clique na imagem para ampliar |

LM390 1W Amplifier (CB25306E)
This small audio amplifier is based on the LM390 with a minimum of external components. We found it...
12 W Amplifier with Bass Boost TDA 1910 (CB15231E)
The integrated circuit used is not common today. The circuit presents a bass boost according to...
Phase Inverter (CB7500E)
This circuit provides two outputs of the same signal. One with the original phase and the other...