Laptop Power Supply (CB8171E)

This circuit was obtained in a 90s 73 magazine for radio amateurs. The power transistor must have a heat sink. The input voltage is 13.6 V.

| Clique na imagem para ampliar |

Commercial Silencer (CB16954E)
With this luminous remote control, which we found in a 1990 publication, using a flashlight you...
Lamp driver (CB9286E)
We found this circuit in a 1967 Electronics World. The circuit can be designed to control other...
Signal Weighting Circuit (CB25965E)
This circuit can be used in a signal level indicator with LEDs. The circuit is from an Electronics Now...