This circuit is from a 1975 Miniwatts magazine, therefore using Philips components from that time, now difficult to find. The circuit directly controls a heating element via a Triac.
This circuit generates a linear triangular signal whose frequency is determined by C1. Transistors...
This circuit is from an ancient American documentation. The T-Bridge circuit determines the...
Two LEDs are used in this TTL circuit. Frequency is given by C1 and C2. Power supply must be a 5 V...