|GCSE >Switch< BJT Comparator Fuse Logic Microswitch MOSFET Pull Up or Down RCD Reed Relay Tilt Touch|
A switch is a passive digital input transducer with a resistance or zero (on) or infinity (off) Ohms.
Switches are used to make or break a circuit. Here are some common varieties and their names.
The diagram shows single and double pole switches.
Using two SPDT switches, draw a diagram to show how stair lights work. It should be possible to turn the light on or off both at the top and bottom of the stairs.
These come in two varieties: push-to-make (NO) and push-to-break (NC).
When a switch is closed, the contacts often bounce causing the circuit to be closed and opened several times until the bouncing has stopped. For something like a lamp or vacuum cleaner, this does not matter at all. In circuits that count pulses, switch bounce can stop the circuit working properly.
The switch needs to be de-bounced and this circuit can be used ...
Subject Name Level Topic Name Question Heading First Name Last Name Class ID User ID
Q: qNum of last_q Q ID: Question ID Score: num correct/num attempts Date Done
Add Delete Clone Edit Hardness
Contact, Copyright, Cookies and Legalities: C Neil Bauers - reviseOmatic V4 - © 2016/17
Hosted at linode.com - London
Please report website problems to Neil