Found in a 1968 American documentation, this circuit generates sawtooth signals whose rise and fall times are determined by C1 and C2. Transistors support modern equivalents.
This circuit uses a PNP transistor to modulate a low power infrared LED. Observe the polarity of...
The integrated circuit used in this configuration is uncommon today. The diodes are for general use...
Although the integrated used originally is uncommon today, more modern operating equivalents can...