LED VU (CB22157E)

This circuit was found in a 1989 publication. The operational amplifier supports equivalents. The LED range can be expanded.

| Clique na imagem para ampliar |

Constant Voltage Source (CB24066E)
We found this circuit in the August 1970 issue of Radio Elecronics magazine. It uses the CA3018...
Tens Electrostimulator (CB17101E)
This circuit was found in a 1997 documentation. The signals are adjusted in a double 555 (556) and the...
DC speed control (CB7149E)
This circuit was suggested by Sprague Electric in an 80's documentation. The circuit uses a...