Active with the output at the high level, this oscillator was found in November 1984 Radio Electronics magazine. The supply can be between 3 and 12 V and the output signal is rectangular.
This circuit converts square (rectangular) signals into triangular signals with typical 16 V...
We found this circuit in a spy book from the 90s. Transistors admit equivalents and the coil can...
This circuit was obtained in a 1979 English magazine. This circuit is a treble filter that,...