This circuit was found in an Electronic Design from the 90s. The circuit uses a type J thermocouple that can measure from -50 to + 100º C. Power is provided by a 3 V lithium battery.
With only one integrated circuit and few additional components, this amplifier has an output power...
This self-oscillating voltage conversion circuit was found in an American 1980s documentation. The MOSFET...
This is the commercial circuit of the Zenith Royal 500 radio manufactured in the 1960s. The...