We found this circuit in an Electronics Now magazine from June 1995. The transformer has a primary according to the network and a secondary of 6 to 9 V with 100 mA.
An E or AND gate can be constructed based on common diodes. In the case, the diodes are for...
This circuit is from an 80's publication. It makes use of small 6 V x 50 mA incandescent lamps....
When S1 is closed, the L1 lamp turns on and the L2 lamp turns off. The circuit is powered...