Adjustable Notch Filter (CB14918E)

This circuit was found in an old Poptronics. Operational amplifiers can be replaced with equivalents. The power supply must be symmetrical.

| Clique na imagem para ampliar |

Gel Battery Charger (CB6053E)
We found this circuit in an 80's Electronic Design. The circuit uses an integrated of the time....
Electronic Power Switch (CB11322E)
With this circuit (shield) we can control a load from 500 mA to 1 A, depending on the transistor, using a...
Very Low Consumption CMOS Monostable (CB13818E)
The consumption of this circuit is only 50 uA in the standby condition and 4.5 mA when supplying a pulse...