This circuit was obtained in a Hands-On Electronics from the 90's. The circuit turns on one LED at the end of the timer, erasing the other. The timing can be increased by changing C1.
This inverter amplifier is suggested by a technical documentation from Texas Instruments. The RF...
This circuit was obtained in old documentation, but it is valid for modern triacs that must be...
Found in English documentation, this timer produces an audio signal at the end of the timing. The...