555 Timer/Oscillator Tester

Source : http://www.uoguelph.ca/~antoon/circ/555test.htm 555 Timer/Oscillator Tester by Tony van Roon Description 555 Tester: The 555-tester above is basically a led flasher circuit but with the 555 removed. Imagen the output being a square-wave pulse with a high and low pulse, and Continue reading

555 Asymmetric Timer

Circuit : Andy Collinson Email: anc@mitedu.freeserve.co.uk Description: A timer circuit with independent mark and space periods. Notes: A simple astable timer made with the 555, the mark (on) and space (off) values may be set independently. The timing chain consists Continue reading