This circuit was found in the November 1974 Radio Electronics magazine. The voltage depends on the supply and the timings of R1 and R2 as well as C1 and C2.
We find this circuit in an 80s operational amplifier documentation. The circuit applies to any...
Using a CMOS 4001, this circuit provides frequency readings on an analog instrument. The idea of...
In the figures we have an infrared transmitter with a BC337 switching transistor that must be...