This circuit was obtained in a 1967 Raytheon manual. The company's component is an optical coupler with a photo-resistor and a lamp. Transistors support equivalents.
This other high stability thermocouple amplifier uses an 80's operating. The circuit can be used...
This 2.2 Hz to 24 kHz filter was found in the February 1995 issue of Electronics Now magazine. The circuit...
This circuit was suggested by Linear Technology in documentation from the 90s. The circuit applies to...