This circuit is indicated for the analysis of pulses in TTL circuits. The circuit is from a documentation from the 70s and must be powered with a 5V voltage.
This alarm, from a 1996 magazine, can be fitted with two BC548s in the original configuration...
Using only one general purpose transistor this circuit is powered by batteries. The lamp of the...
Can be used as a shield, this old American documentation circuit offers digitally selected...