Make: Electronics - Experiment 8

This experiment adds a 1k microF capacitor to the mix to use with our DPDT latching relay, momentary switch, and resistor. This time around the switch doesn't directly control the coil within the relay and the capacitor acts as a backup battery source for said coil.

Experiment XX: Debouncing a Switch 1 - Debouncing a SPDT Slider Switch

This video discusses what is switch bouncing and explaines how we can debounce a SPDT (single pole double throw) slide switch. It uses an SR latch to achieve debouncing and it shows how we can implement this circuit using 74LS00 NAND gates. It also examines the output of this circuit using an oscilloscope and demonstrates that the circuit is working effectively. This is part 1, in the next part I will explain how to debounce a SPST momentary push button switch using a RC circuit and a Schmitt trigger. This video is part of a module on digital electronics that is running at the School of Electronic Engineering at Dublin City University. www.eeng.dcu.ie