This circuit was obtained from Motorola documentation. It generates light pulses at a rate of 120 per minute. Equivalent transistors can be used. The circuit can also excite high brightness LEDs.
This circuit makes use of a special LM195 power transistor not very easy to obtain. The circuit is from...
Found in documentation from the 90s, this circuit can employ other comparators in the series such as...
Suggested by Philips in a 1970 publication, this circuit uses components from that time. No...