I tried putting together the top-off system in a past issue. I connected everything up as shown, so I think anyway. What DC voltage should I be getting after the 2k resistor? I still have over 110 volts DC. I'm figuring I should be getting less than 32 VDC to make the relay work.
Where am I going wrong?
I used a meter to measure the voltage at the wall 123.5 VAC. I wired the bridge rectifier to the AC current and got 111 VDC output.(which I expected) Then I put the 2.2K ohms resistor inline and got 110.5 VDC on the other side of that. This is not what I expected. I double checked the resistor and it measures 2.15K ohms. I was orignally going to step down the 120VAC to 12VAC then run it to the bridge rectifier. And before that I was going to use transformers instead of recitifers. But after looking at this and beerguys setup I figured any idiot could do this without transformers and save money and space. I was only half right, this idiot can't figure it out.
Any ideas what's up? I have to be missing something here. I'm no electrical genius but I can do math. What formula can I use to get the expected voltage drop? If I can just get this down to 12-32 VDC I can make this work like I want it to I think.
Thanks for your help.
Where am I going wrong?
I used a meter to measure the voltage at the wall 123.5 VAC. I wired the bridge rectifier to the AC current and got 111 VDC output.(which I expected) Then I put the 2.2K ohms resistor inline and got 110.5 VDC on the other side of that. This is not what I expected. I double checked the resistor and it measures 2.15K ohms. I was orignally going to step down the 120VAC to 12VAC then run it to the bridge rectifier. And before that I was going to use transformers instead of recitifers. But after looking at this and beerguys setup I figured any idiot could do this without transformers and save money and space. I was only half right, this idiot can't figure it out.
Any ideas what's up? I have to be missing something here. I'm no electrical genius but I can do math. What formula can I use to get the expected voltage drop? If I can just get this down to 12-32 VDC I can make this work like I want it to I think.
Thanks for your help.