Found in a 1965 Electronic Design, this circuit generates adjustable pulses between 200 uA and 10 mA. The components admit equivalents. Pulse duration is 1 us.
This circuit was obtained from HAM Radio magazine in an 80's issue. The FETs are types of the time...
This circuit generates noise pulses for audio equipment probes. The circuit is from a 90’s 303...
This circuit was found in a 1970s General Electric documentation. This circuit already used an...