Fridge Defrost Timer with Solar Trigger Option - Revision history

Definitionofis: link fix

2021-03-14T20:12:16Z

link fix

Definitionofis at 18:38, 24 October 2016

2016-10-24T18:38:08Z

Definitionofis at 17:00, 22 July 2012

2012-07-22T17:00:20Z

Definitionofis at 17:52, 17 February 2012

2012-02-17T17:52:14Z

Definitionofis: moved Fridge Defrost Timer with Solar Trigger option to Fridge Defrost Timer with Solar Trigger Option

2012-02-17T17:41:04Z

moved Fridge Defrost Timer with Solar Trigger option to Fridge Defrost Timer with Solar Trigger Option

Definitionofis: Created page with 'This fridge defrost timer is triggered from my solar panel system so the fridge defrost cycle will run only when I have excess power. It can be triggered from any 7 to 25vdc sig…'

2012-02-17T17:14:52Z

Created page with 'This fridge defrost timer is triggered from my solar panel system so the fridge defrost cycle will run only when I have excess power. It can be triggered from any 7 to 25vdc sig…'

New page

This fridge defrost timer is triggered from my solar panel system so the fridge defrost cycle will run only when I have excess power.

It can be triggered from any 7 to 25vdc signal. I used the battery vent fan signal from my Outback Battery charger.

It powers itself from the signal or from a micro-amp parasitic source.
I did not want to use a power adapter which wastes power all day and is too big for the container.

www.dipmicro.com had a key part: cpc1030N, which is a surface mount Clare opto-isolated relay 0.85mA 1.4 input, controlling 120vac 120mA .
and the prototyping board.

The two 10 farad super capacitors are $4 each at www.digikey.com. part #589-1002-ND. Project box: #SR123-IA-ND.
Don't use Nichicon. They lose charge too quickly.
The relay is: JQX-13F (be sure to select the 120vac coil JQX-13F A110-2Z1) $7.

circuit: http://img831.imageshack.us/img831/1354/fridgedefrostersolarsch.png
board etch pattern: http://img511.imageshack.us/img511/368/fridgedefrostersolaretc.png

Later I discovered my mechanical timer only ran when the compressor was on. Plus, I added capacitors on the chip reset pins to stop electrical interference triggering false resets. So here is a revised schematic for that kind of defrost:

http://img602.imageshack.us/img602/8869/fridgedefrostersolartim.png

← Older revision		Revision as of 20:12, 14 March 2021
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−	ALL MY PROJECTS ARE HERE: ~~http~~://~~www.~~opencircuits.com/User:Definitionofis	+	ALL MY PROJECTS ARE HERE: https://opencircuits.com/index.php?title=User:Definitionofis

	This fridge defrost timer is triggered from my solar panel system so the fridge defrost cycle will run only when I have excess power.		This fridge defrost timer is triggered from my solar panel system so the fridge defrost cycle will run only when I have excess power.

← Older revision		Revision as of 18:38, 24 October 2016
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		+	ALL MY PROJECTS ARE HERE: http://www.opencircuits.com/User:Definitionofis
		+
	This fridge defrost timer is triggered from my solar panel system so the fridge defrost cycle will run only when I have excess power.		This fridge defrost timer is triggered from my solar panel system so the fridge defrost cycle will run only when I have excess power.

← Older revision		Revision as of 17:00, 22 July 2012
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	[[File:Fridgedefrostersolartim.png]]		[[File:Fridgedefrostersolartim.png]]
		+
		+	[[File:FridgeTimer board layout.png]]

← Older revision		Revision as of 17:52, 17 February 2012
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	http://img602.imageshack.us/img602/8869/fridgedefrostersolartim.png		http://img602.imageshack.us/img602/8869/fridgedefrostersolartim.png
		+
		+	[[File:Fridgedefrostersolartim.png]]

← Older revision	Revision as of 17:41, 17 February 2012
(No difference)