Chippiejnr
New Member
I have a couple of the Red pcb based 0-30v power supply board kits from EBay.
Having tried to power them with a linear transformer, I find the regulation of the transformer not good enough despite being a toroid type.
I have a 36v switch mode power supply rated for 4 A which holds up quite well under load.
My plan is to use the 36V to power the series element, use a linear reg to reduce the control sections supply rail to 30V …to generate the negative supply, I was proposing to add a seperate winding onto the switching transformer……then use a simple diode,cap circuit with a zener to cap the voltage…..
Anyone see any issues with this proposal?
Having tried to power them with a linear transformer, I find the regulation of the transformer not good enough despite being a toroid type.
I have a 36v switch mode power supply rated for 4 A which holds up quite well under load.
My plan is to use the 36V to power the series element, use a linear reg to reduce the control sections supply rail to 30V …to generate the negative supply, I was proposing to add a seperate winding onto the switching transformer……then use a simple diode,cap circuit with a zener to cap the voltage…..
Anyone see any issues with this proposal?