Register to reply

Geyser Timer

Share this thread:
Fuzigish
#1
Nov15-08, 06:53 AM
P: 5
I want to build a digital timer that will switch my geyser on and off at a preset time in order to save power. I don’t know much about PICs so I would rather try using only logic ICs. It has to have at least 3 preset ‘on-times’ and 3 ‘off-times’. Can anyone help me to get started?
Phys.Org News Partner Engineering news on Phys.org
Tiny UAVs and hummingbirds are put to test
Britain to trial driverless cars from 2015
NIST corrosion lab tests suggest need for underground gas tank retrofits
Proton Soup
#2
Nov15-08, 03:08 PM
P: 1,070
seriously, just go to the hardware store and pick up an AC wall timer. something like this:


maybe get a "heavy duty" unit, while you're at it. don't know how much power a "geyser" uses.
Fuzigish
#3
Nov15-08, 03:52 PM
P: 5
Unfortunately it would be illegal to build something like that into a distribution board in South-Africa. Plus an average geyser is 4000W – 6000W, so I don’t think even a heavy-duty unit would work.

This is an example of something similar: http://www.geyserwise.co.za/web/index.php

Proton Soup
#4
Nov15-08, 05:35 PM
P: 1,070
Geyser Timer

a "geyser" is a hot water heater?

there are also timers that control a lot more current and could be inserted into an electrical panel. what i don't get is how it's going to be any more legal for you to insert some homemade controller into a panel. if that's your goal, you'll need to buy an approved product.
Fuzigish
#5
Nov16-08, 03:32 AM
P: 5
Yes, a ‘geyser’ is a hot water heater.
This whole exercise is not to build something that will necessarily be used. I just want to learn something out of this about logic-ICs, so buying a pre-built unit would be pretty useless.


Register to reply

Related Discussions
Statistical mechanics Geyser Advanced Physics Homework 0
556 from a 555 timer Electrical Engineering 1
555 timer Electrical Engineering 13
No more timer? Forum Feedback & Announcements 12