This circuit was found in Linear Technology documentation from the 90's. The circuit uses components from that time, and can be powered by 5 V. In these conditions, it can function as a shield.
This oscillator with emitter follower was found in an American documentation from the 80's. The...
This circuit was found in an Electronics World of 1969. Transistors are general-purpose types. It...
The frequency of this oscillator depends on the inductor and capacitors in parallel with it. In...