Auto Bias for FET (CB6125E)

This configuration is from a 1964 US documentation valid for any FET. The range of power voltages depends on the application.

| Clique na imagem para ampliar |

Two tone siren (CB9085E) This circuit was found in a 1980’s Radio Electronics. The signal must be applied to an amplifier stage. Capacitors can be changed to change effects. img src="images/stories/bc/144064"
Two tone siren (CB9085E) This circuit was found in a 1980’s Radio Electronics. The signal must be...
20 W per channel NEC amplifier (CB6984E)
Found in an American publication from the 1980s, this circuit can be found in commercial sound...
Ice Warning on the Track (CB6046E)
We found this circuit in an 80's Radio Electronics. The circuit uses a PTC sensor and an LED...