LT123 Low Voltage Linear Regulator (CB4399E)

The circuit presented is from the 1993 Linear Technology Applications. The components used were common at the time.

Digital tachometer (CB7376E)
Found in Radio Electronics from the 90s, this circuit uses components from that time. However, it...
Transistor Tester with the 741 IC (CB1497E )
In the figure we have a configuration that allows to test NPN transistors and with the addition of a...
Signal Plotter (CB12297E)
This simple signal tracer was found in a Popular Electronics from the 90's. The transistor can be a...