The ports used in this ultrasonic remote-control transmitter are TTL, requiring a 5 V supply. The transducer is a piezoelectric type, not very common today.
Twin-T oscillators can be used to produce sinusoidal signals in the audio track with good...
November 2016 - Texas Instruments' new TPS62135 and TPS621351 step-down converters with a wide...
This circuit is from the factory manual of the LM202, an uncommon operation today. It shows how to...