This circuit with RTD sensor was found in the Radio Electronics magazine of April 1992. At the output we have 1 mV for each degree Celsius.
This is the circuit for the transmitter described in the previous project. T-he 4tube circuit has...
This preamplifier is intended for the use with magnetic pick-ups. Power supply must have voltages...
The low power transistors of this siren can be BC548 or BC558 according to NPN or PNP. The output...