Found in the March 1992 Radio Electronics magazine, this circuit has two supply voltages. The maximum input voltage is 14 V.
This circuit is from a 1978 publication. It can be assembled with BC548 transistors for NPN and...
Wired to the output of any amplifier this circuit makes an incandescent lamp flash according the...
Other operational amplifiers in the series, such as the MC34072, MC34074, MC35071, MC35072,...