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Search took 0.03 seconds. Search: Posts Made By: jeff5may

Forum: Geothermal & Heat Pumps

11-17-15, 03:29 PM

Replies: 28

Home made heat pump controller

Views: 22,666

Posted By jeff5may

You pretty much nailed the board. The mains...

You pretty much nailed the board. The mains transformer spits out 9vac or so which filters to unregulated 12vdc for the relay coils. The chip is typically a ULNxxxx (EDIT: xxxx=2003 or 2803) logic...

Forum: Geothermal & Heat Pumps

11-17-15, 07:15 AM

Replies: 28

Home made heat pump controller

Views: 22,666

Posted By jeff5may

For those with a distaste for ladder logic, the...

For those with a distaste for ladder logic, the PLC units can be fed a program created elsewhere (on a PC) and translated to ladder. Usually the translated program is optimized during translation, so...

Forum: Geothermal & Heat Pumps

11-16-15, 03:52 PM

Replies: 28

Home made heat pump controller

Views: 22,666

Posted By jeff5may

Cheater, cheater, pumpkin eater! You've offloaded...

Cheater, cheater, pumpkin eater! You've offloaded the work onto other devices! You're supposed to strain the dev board! Just kidding.

In the general purpose controller discussion, many of the...

Showing results 1 to 3 of 3

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