Comments on: Mark Three

By: Benz World Blog » Mark Four

Benz World Blog » Mark Four — Thu, 09 May 2019 08:20:39 +0000

[…] boards, which each stage has used, were intended to be easy to replace. The first, second and third designs all worked but after using them for a while I decided to removed features I did not use and […]

By: Benz World Blog » Kookaburra Cash

Benz World Blog » Kookaburra Cash — Fri, 26 Apr 2019 08:53:01 +0000

[…] Blue Mountains until the Australian federal election on 18th May. While I am here I am upgrading power control board in my van and uploading to stock […]

By: Jason Benz

Jason Benz — Sun, 29 Nov 2015 11:17:46 +0000

Diodes installed, It’s now working as planned.

By: muonman

muonman — Thu, 05 Nov 2015 10:57:18 +0000

They look beefy enough, 12A.

By: Jason Benz

Jason Benz — Wed, 04 Nov 2015 21:57:00 +0000

Thanks, I will order these diodes then.

By: muonman

muonman — Wed, 04 Nov 2015 15:19:29 +0000

OK then just feed your circuit with a diode between each battery and your circuit. You will only lose about 200mV with a Schotkey diode. Good luck.

By: Jason Benz

Jason Benz — Wed, 04 Nov 2015 12:14:03 +0000

The switches have +12V, ground & output which is also wired their indicator light. They also have an unused inverse output which may be useful. I spoke to Photonic Universe about their solar controller. It can handle the alternator but must not have the batteries detached once the PV is connected. So both batteries and the PV are permanently attached their controller. My circuit just deals with output loads now.

By: muonman

muonman — Wed, 04 Nov 2015 11:53:32 +0000

I am a little confused as all the switches have three wires and I don’t see the PV. Am I right in thinking you basically want to monitor the state (V) of each battery and select which battery gets the sunlight? Are you interested in charging current or discharge current as the meter is not centre zero it can’t do both?

By: Jason Benz

Jason Benz — Wed, 04 Nov 2015 09:58:42 +0000

S1, S2 & S3 are the switches. Will these diodes stop the cross current flow?

By: muonman

muonman — Wed, 04 Nov 2015 09:47:31 +0000

What are 51,52 and 53? The Ammeter should have effectively zero resistance so if the four wires going in at the top would normally go to ground if there were no meter this circuit is close to perfect. If the meter has appreciable resistance then there will be some cross current flow.