The difference between this circuit and the previous one is that it uses PNP transistors. The circuit is from Radio Electronics magazine from July 1968. The frequency depends on R1 and C1.
This adjustable regulator uses the 741 and power transistors and can supply a current of up to 1...
This TTL circuit found in the September 1996 issue of Electronics Now magazine doubles the...
This test instrument was found in the April 1991 issue of Radio Electronics magazine. The circuit has...