Battery Charger (CB26303E)

This automatic battery charger was found in a Popular Electronics from the 90s. The circuit uses a relay for automatic shutdown.

| Clique na imagem para ampliar |

Mini Flasher (CB4416E)
This conventional slow-moving circuit uses incandescent light bulbs, but can be changed to use...
Electronic Dice (CB12221E)
This TTL dice is from an old publication from 1978, but it can still be assembled, as the...
Gate Control (CB18152E)
The purpose of this circuit is to control magnetic door locks activated by the power grid. The...