This oscillator was found in a 1976 documentation. The no specified components indicate circuit timings in the range of 150 ns to 120 seconds. The supply must be made with 5 V.
This circuit operates at the frequency of a small transmitter up to 27 MHz, triggering a relay from...
This medium wave radio with 7 germanium transistors was manufactured in Japan in the 1960s. Its...
In the figure we have the way to implement a power zener diode. The voltage depends on the zener,...