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Date: Mon, 24 Mar 2025 11:05:32 -0400
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Subject: Re: relay board
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On 3/24/2025 10:33 AM, john larkin wrote:
> 
> Here's another PCB:
> 
> https://www.dropbox.com/scl/fi/yxqdj418jx1ttuusqqehg/P946_Relays_A11.jpg?rlkey=hxshyt4mze59k31xpnsi3bfzc&raw=1
> 
> I figured we could have a relay board in our modular power system, and
> my PCB layout guy had time, so I did one.
> 
> Then I figured that instead of fuses to protect the contacts and PCB
> traces, I could use Hall sensors and drop out a relay if the current
> exceeds 8 amps. Then I figured I may as well report the currents to
> users. And why not voltage too? Then  it became a programmable circuit
> breaker module. With average and RMS voltage and current and power
> measurement and waveforms.  And programmable ganging. And plugin fuses
> for bussing. Somebody stop me.
> 

Better is the enemy of the good