This circuit has its frequency controlled by a 1MHz crystal. The circuit must be powered by a voltage of 5V. The capacitors must be ceramic. The generated signal is rectangular.
This circuit uses one of two D-type flip-flops available on an integrated circuit 4013. The...
This other high stability thermocouple amplifier uses an 80's operating. The circuit can be used...
This circuit was found in a 1967 General Electric manual. It shows a SCR control with unijunction...