With this circuit of a Popular Electronics from the 90's it is possible to test a diode with the oscilloscope visualizing its characteristic curve. The transformer can have currents starting from 100 mA.
This circuit was found in a Popular Electronics of the 90s. It operates a third brake light that...
I found this little signaling transmitter in old American documentation. The circuit has a good...
This sensitive amplifier for low current measurement uses a differential amplifier configuration with...