This circuit was obtained from an American 1980s documentation. The frequency depends on the crystal and the circuit may be a PNP that reaches the generated frequency.
July 2017 - Texas Instruments' new 3 A bq25601 single cell battery charger can be found on Mouser...
The presented circuit is based on an operational transconductance amplifier (OTA) having been...
This circuit generates high voltage for the firing of a xenon lamp. We found this configuration in a 1994...