With this circuit it is possible to modulate pulses from a pulsating input signal. The PNP transistor can be the BC558 and the power must be supplied with 5 V.
This circuit is from a 1980 publication. The circuit has high gain with weak signals and lower gain...
This analog thermometer was obtained from an English documentation. The sensor is a common diode...
This low current converter was found in the January 1997 issue of Electronics Now magazine. It is...