Continuity test (CB8211E)

This continuity test was found in a 90s Popular Electronics. The circuit applies a voltage of 300 mV to the component or circuit under test.

| Clique na imagem para ampliar |

CW Shortwave Micro Transmitter (CB3999E)
This microtransmitter operates at a frequency between 3.5 MHz and 10 MHz determined by the...
Negative Pulse Generator LM3900 (CB15621E)
The circuit in the figure generates a negative pulse when it receives an appropriate stimulus at...
Rhythmic Indicator (CB16287E)
There are many ways to make a set of lamps blink, keeping pace with the music of an amplifier. You can use...