Help Wiring Wireless Momentary Relay

Thread Starter

ljcool

Joined Apr 9, 2015
7
Hi, I don't have a whole lot of experience with circuitries so I'm asking for help. I'm planning on purchasing a wireless momentary relay to power on my pc. I have found one that seems to fit the bill. http://www.ebay.com/itm/DC-12v-10A-...rol-Switch-Transmitter-Receiver-/221283333405. However, it doesn't have a wiring diagram for dc, only for ac.

I figured I could use a 23A battery for the DC 12V, but how should I install positive and negative wires for the pc power switch? Should positive go to live and negative go to neutral?
 

Hypatia's Protege

Joined Mar 1, 2015
3,228
Hi, I don't have a whole lot of experience with circuitries so I'm asking for help. I'm planning on purchasing a wireless momentary relay to power on my pc. I have found one that seems to fit the bill. http://www.ebay.com/itm/DC-12v-10A-...rol-Switch-Transmitter-Receiver-/221283333405. However, it doesn't have a wiring diagram for dc, only for ac.

I figured I could use a 23A battery for the DC 12V, but how should I install positive and negative wires for the pc power switch? Should positive go to live and negative go to neutral?
The terminals on the right connect to the module's power supply, whereas the terminals on the left are switched by the relay... If you will be switching DC the positive side of the PC switch should go to Line(L) and the Negative side to Neutral(N)...

Best regards
HP
 
Last edited:

Thread Starter

ljcool

Joined Apr 9, 2015
7
Yes, and I'm particularly concerned with the left. It shows an AC diagram but I need to wire a DC on it because I will be connecting that part to my Motherboard's power terminal. Should I just substitute the live wire with positive and neutral with negative?
 

Hypatia's Protege

Joined Mar 1, 2015
3,228
Yes, and I'm particularly concerned with the left. It shows an AC diagram but I need to wire a DC on it because I will be connecting that part to my Motherboard's power terminal.
The module will switch either AC or DC please re-read my previous post for details (It has been [subsequently] edited)

Best regards
HP
 

Thread Starter

ljcool

Joined Apr 9, 2015
7
Oh, I'm sorry. I failed to see your edit. But it's good to know it's that simple. Thanks for the reply. I'll give it a try once the wireless relay arrives.
 

MaxHeadRoom

Joined Jul 18, 2013
28,698
The LH side is just a simple switch contact, so it is capable of switching AC or DC, in your case you want to retain the method it is sent in, which is momentary, (non-latched).
The LH output side just replace, or is in parallel to the internal P.B. switch in the PC.
Max.
 

alfacliff

Joined Dec 13, 2013
2,458
the power supply should be marked with its output connections, most modern supplies have a small supply built in for the "wake on lan" function, and to supply dc for the on button.
 

Thread Starter

ljcool

Joined Apr 9, 2015
7
The LH side is just a simple switch contact, so it is capable of switching AC or DC, in your case you want to retain the method it is sent in, which is momentary, (non-latched).
The LH output side just replace, or is in parallel to the internal P.B. switch in the PC.
Max.
Thanks Max. It is Momentary out of the box which is good. So I guess I'll just replace the lines out.
 

Thread Starter

ljcool

Joined Apr 9, 2015
7
the power supply should be marked with its output connections, most modern supplies have a small supply built in for the "wake on lan" function, and to supply dc for the on button.
I'll try to look into that and see what I can find. All I know is how to short the PSU to make it start without a motherboard.
 

Thread Starter

ljcool

Joined Apr 9, 2015
7
the power supply should be marked with its output connections, most modern supplies have a small supply built in for the "wake on lan" function, and to supply dc for the on button.
As I've found out, the stand by power provided by the PSU when the PC is turned off is not enough to supply for the wireless receiver. It only supplies 5V while the receiver needs 12V. That 5V is routed to the CMOS and RTC and the CR2032 battery takes over when the PSU is unplugged or the power strip or UPS it is connected to is turned off. I guess I'll just stick to powering the receiver with an A23 battery. Thanks again!
 
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