We found this circuit in the March 1992 Radio Electronics magazine. The circuit provides 100 Hz for each degree Celsius or Fahrenheit.
This circuit shows how to get 5 V under low current from an operating amplifier 741. I got this...
This circuit uses two JFET such as the BF244 or BF245 and has an excellent gain with small...
This circuit was found in the March 1995 issue of Electronics Now magazine. The circuit requires a...