This circuit is from Delco Radio found in a 1968’s documentation. The transistors are of the time and are not given information about the driver transformer. Note the high supply voltage.
This circuit was obtained in a 1973s documentation. The transistors may be BC558 for the PNP and...
PIC18F “K40” Features Intelligent ADC with Filtering and Signal Analysis Capabilities Ideal for...
September 2016 - can already be purchased at Mouser Electronics the Robot Scribbler S3 from...