We found this circuit in a 1969 Mullard documentation. The same configuration appears elsewhere in this section. The control range is -2 dB to 19.5 dB at 30 Hz.
This medium wave radio with 7 germanium transistors was manufactured in Japan in the 1960s. Its...
This simple circuit can work with either 4.5 V or 6 or 9 V if a 1k resistor is added in series with...
This simple oscillator with just one transistor has a frequency determined by the characteristics of the...