Burglar Alarm (CB6443E)

This circuit is from a 1991 Hobbyst Handbok. The circuit uses a small 6V secondary transformer to operate on a miniature xenon lamp inverter.

| Clique na imagem para ampliar |

Integrator with bias compensation (CB3939E)
We found this circuit in an old publication. The circuit can be implemented with modern equivalent...
Analog multiplier (CB7392E)
Suggested by Fairchild in a 1980s publication, this multiplier uses operational amplifiers from that...
Subwoofer Filter (CIR25262E)
This low-pass circuit was found in the December 1990 issue of Radio Electronics magazine. The...