Car Alarm (CB8925E)

This circuit was found in a 80’s Popular Electronics. The components are common and the 8-ohm speaker.

| Clique na imagem para ampliar |

Nicad Protected Charger (CB6401E)
This circuit was found in a European documentation from 1964. The circuit makes use of components of...
Touch Switch (CB16251E)
This circuit consists of a design improvement that we have previously published (1982), obtaining a new...
200 nA constant current source (CB8243E)
This adjustable circuit from 0 to 200 nA was found in a 90's EDN. The components can still be...