Hi.
I've already built a bench power supply. Built is a stretch. Cobbled.
It gives me 24V 3A with current limiting single rail power. I believe it uses a crowbar to limit current.
I built the Volt and Ammeter using the Intersil chips in Led format. (Also built them in LCD). It has a temp regulated fan on the heat sink.
I built it so long ago. I can post pics if people have the stomach for electric gore.No Printed PCBs here...just hackery !
I'm sure it meets no standards....at all....except electric isolation. I think...hasn't caught fire , even under alot of stress.
Now ,I'd like to build a dual rail power supply. Using the Intersil ICs (Something about building your own meters).
The killer is the transformer. Shipping is quite prohibitive for a decent toridal transformer that can deliver say 1000w at Max 48v.
Though I suspect I can use 2 switch mode supplies in series an use the bond as Common and I'll get my +Vc/0/-Vcc..correct?
But any noise from the switch mode would insert itself into my unit ..correct?
Any recommendations on tried schematics?..the working ones. 😊.
It's been on my list for a while and I'd like too build 3 units of my own. Not because its cheaper, it isnt , but because it's fun.
The 3rd unit ,I will play once again with an Arduino to control it. But bumping this unit up to +/- 60v 10A. .
A finger in the right direction ( the index preferably) would be much appreciated.
I've already built a bench power supply. Built is a stretch. Cobbled.
It gives me 24V 3A with current limiting single rail power. I believe it uses a crowbar to limit current.
I built the Volt and Ammeter using the Intersil chips in Led format. (Also built them in LCD). It has a temp regulated fan on the heat sink.
I built it so long ago. I can post pics if people have the stomach for electric gore.No Printed PCBs here...just hackery !
I'm sure it meets no standards....at all....except electric isolation. I think...hasn't caught fire , even under alot of stress.
Now ,I'd like to build a dual rail power supply. Using the Intersil ICs (Something about building your own meters).
The killer is the transformer. Shipping is quite prohibitive for a decent toridal transformer that can deliver say 1000w at Max 48v.
Though I suspect I can use 2 switch mode supplies in series an use the bond as Common and I'll get my +Vc/0/-Vcc..correct?
But any noise from the switch mode would insert itself into my unit ..correct?
Any recommendations on tried schematics?..the working ones. 😊.
It's been on my list for a while and I'd like too build 3 units of my own. Not because its cheaper, it isnt , but because it's fun.
The 3rd unit ,I will play once again with an Arduino to control it. But bumping this unit up to +/- 60v 10A. .
A finger in the right direction ( the index preferably) would be much appreciated.
About filtering the switchers: once you have them check the output on your scope and check the switching frequency. Build a common mode LC filter to take care of that.
