X
Advertisement

1,041 questions

1,221 answers

205 comments

779 users

Looking for a circuit that can control a contactor. It needs to be adjustable on off time.

280 views
0 votes
Looking for a circuit that can control a contactor. It needs to be adjustable on off time.

The circuit will be controling a blowdown valve on a small boiler. When the boiler is running i need to open a 120vac valve for several minutes every hour. If the boiler shuts off i need to be able to disable this timer in the off position until the boiler starts back up. It starts and stops automatically. Usally once or twice a week. 120 vac is available as well as contacts to signal when running ad not running. Any ideas would be great. Off the shelf components would also help.
asked Dec 9, 2015 by daverepair (120 points)

1 Answer

0 votes

Consider a Repeat Cycle timer.  They are not that expensive.  Hear is a link for one.  http://www.rammeter.com/atc-automatic-timing-controls-422ar-100-s0-x-multi-range-repeat-cycle-timer.php?gclid=CMbd2umBh8sCFQepaQodRg0Kbw
answered Feb 20, 2016 by gilshultzhome-com (17,730 points)

Related questions

  • 0 votes
answered Mar 15, 2013 by nilesh (620 points)
  • 0 votes
answered Dec 23, 2012 by (920 points)
  • 0 votes
answered Dec 20, 2012 by admin (6,160 points)
  • 0 votes
answered Mar 8, 2013 by j-keith (12,800 points)

1,041 questions

1,221 answers

205 comments

779 users

Latest Article Comments

36V Battery Level...
"Hi. Can I add a 12 volt relay for alarm on this 24 v batt level indicatator Circuit.any"
Hacking a Camera Shutter with Infineon TLE94112LE and Arduino - Part...
"I really love the hand drawn artwork. I use things like this a lot to help me gather my"
Visualizing Data with...
"@Adam: Let's going on... Processing Overview - https://processing.org/overview/ Artificial"
Talk Over...
"can you tell us about what that components code are ? i'm new at this so i don't know some of"
Visualizing Data with...
"I was not aware of the Processing pakage for plotting. I will have to go and take a look at"
Magnetic Field Sensor...
"Hi I have a practical use for this and was hoping you would be able to supply a schematic"
Arduino RFID Access Control with...
"use this code for check 12 digit rfid code.. int count = 0; "
74LS393...
"Very usefull article. Understanding and interpreting datasheets is not a simple matter. Thanks for"
Temperature Controlled DC...
"What is the VR in the circuit? Please do"
How to Use Switch Mode Power Supplies to Power Your IoT...
"AP8012 PDF datasheet (from AiT Semiconductor Inc."
electroschematics group on facebook
...
  Search 4 million + Products
Browse Products