Institute Newton C. Braga

Circuit Bench

Triac photo control (CB8270E)
This 1970s RCA circuit can be triggered by light or dark, depending on how the LDR is connected....
Symmetrical power source for amplifier (CB8174E)
This circuit was found in a 90s Silicon Chip documentation. The current of the transformer is 1 A maximum,...
9 V x 200 mA power supply (CB1159E)
The different aspect of this source is the use of a 12 V lamp as a current regulator together with a...