The circuit in the figure uses two operational amplifiers: an LM101A and an LM102. Diodes admit equivalents and resistors do not have to be accurate. The power supply must be symmetrical.
Suitable for the use with sensors, this circuit from National Semiconductor appears in other...
This multipurpose amplifier of a few hundred milliwatts of power was found in a Raytheon circuit...
This elaborate electric fence design differs from the others by triggering an alarm in the event of...