Warning shield (CB6855E)

This circuit uses a General Electric coupler from the time of the publication in the 1980s. Equivalent SCR can be used.

| Clique na imagem para ampliar |

Geiger counter 1 (CB7809E)
Found in a Popular Electronics from the 90s, this circuit presents the difficulty of obtaining the...
Gain-1000 Amplifier Using the 741 (CB257E)
The voltage gain of this circuit is 1,000. This gain is given by the ratio between the 10 M ohm...
4046 Pulsing Alarm Sounder (CB25767E)
This circuit was found in the October 1994 issue of Electronics Now magazine. The 40446 IC is a...