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Relay PWM? Version 8.0

PostPosted: Sat Sep 23, 2017 8:40 pm
by n1ng
Hi Everyone,

I just bought a used RA. I want to try to dim my kessil 160we. I cracked open the relay looking for jumpers but didn't find any. The board is labeled version 8.0 is it PWM? And 0-12v? I'm guessing that I need analog?

Is there a way to diy could convert to analog?

Thanks!
Norm

Re: Relay PWM? Version 8.0

PostPosted: Sat Sep 23, 2017 9:25 pm
by rimai
Can you post a photo of the inside?

Re: Relay PWM? Version 8.0

PostPosted: Sun Sep 24, 2017 11:01 am
by n1ng
Here you go.

Thanks Roberto!

Re: Relay PWM? Version 8.0

PostPosted: Sun Sep 24, 2017 11:52 am
by rimai
You will have to populate R1/C1 and R2/C2 with 10K/10u components.

Re: Relay PWM? Version 8.0

PostPosted: Sun Sep 24, 2017 12:52 pm
by n1ng
Thanks Roberto. Is this the low pass filter (capacitor and resistor)? I'm guessing I can make the circuit and connect it to the leads outside the relay box?
15851255626_49ae83a2f4_o (1).png
15851255626_49ae83a2f4_o (1).png (11.84 KiB) Viewed 1944 times

Also there seem to be two pads on R1/C1 and R2/C2 which ones would I use? I highlighted my guesses :?
IMG_20170924_135912a.png
IMG_20170924_135912a.png (496.95 KiB) Viewed 1946 times


Sorry for all the questions, I have no background in electrical circuitry.

Norm

Re: Relay PWM? Version 8.0

PostPosted: Sun Sep 24, 2017 5:39 pm
by rimai
Correct. It's the filter and you do need to have them before the amplifier.
If you do the way you mentioned outside the relay box, it won't work.
Not sure what you are asking about the pads.
Each resistor has 2 terminals and each capacitor have two terminals.
You just need to solder them on the locations shown in the board.

Re: Relay PWM? Version 8.0

PostPosted: Sun Sep 24, 2017 8:03 pm
by n1ng
rimai wrote:Correct. It's the filter and you do need to have them before the amplifier.
If you do the way you mentioned outside the relay box, it won't work.
Not sure what you are asking about the pads.
Each resistor has 2 terminals and each capacitor have two terminals.
You just need to solder them on the locations shown in the board.


Ahhh I think I get it. So R1, R2, C1, C2 all have two pads. So I just need to solder the resistor terminals to the pads.

So for example the capacitor for C2 would be soldered to C2 and "+" correct?

And since you mentioned an amplifier I'm guessing I have the 12v required to dim the kessil?

Norm

Re: Relay PWM? Version 8.0

PostPosted: Sun Sep 24, 2017 9:14 pm
by rimai
R1/C1/R2/C2 are the reference label of the component. The + is polarity of the capacitor should you want to use polarized capacitor.

Re: Relay PWM? Version 8.0

PostPosted: Mon Sep 25, 2017 5:24 am
by n1ng
Thanks again. I give it a try.

Re: Relay PWM? Version 8.0

PostPosted: Wed Sep 27, 2017 4:45 pm
by n1ng
All done! Just like Roberto said. Solder on the caps and resistors. Made an adapter for the relay to connect to the Kessil cable and voila! Dimming leds!

Thanks for all the help!