We found this circuit in a 1980s documentation. Equivalent components can be used. The circuit senses temperatures in the range of 0 to 50º C and uses a transistor as sensor.
This circuit, from the 1977 GE semiconductor manual, uses a unijunction transistor beyond the...
We found this circuit in a 1975 publication. The power supply must be symmetrical, but other...
This simple nicad battery charger uses a current regulator with the LM350. This integrated circuit must be...