Hello,
i am planning to design a 0-1000V adjustable power supply with linear regulator. and here are desired specs:
- floating output
- sink and source current (5mA max)
- external voltage(0-10V) or potentiometer programming
- short circuit protection (shorted for a long time)
- voltage monitor (0-10V)
- low ripple (<1mV)
- temperature compensated (<20ppm)
i hear you say "go and buy a high quality brand PSU" ha? but the current needed is very small, may be it makes a simpler design possible. i considered to making with MC1466L regulator, but it's hard to find and very old IC. and also tried with classic linear regulator design(with error amp and HV BJTs) but can not reach 1kV. there are some HV opamps lile Apex PA series but they are very expensive(around 200$). can you suggest any idea/circuit/topology/component for this purpose?
i am planning to design a 0-1000V adjustable power supply with linear regulator. and here are desired specs:
- floating output
- sink and source current (5mA max)
- external voltage(0-10V) or potentiometer programming
- short circuit protection (shorted for a long time)
- voltage monitor (0-10V)
- low ripple (<1mV)
- temperature compensated (<20ppm)
i hear you say "go and buy a high quality brand PSU" ha? but the current needed is very small, may be it makes a simpler design possible. i considered to making with MC1466L regulator, but it's hard to find and very old IC. and also tried with classic linear regulator design(with error amp and HV BJTs) but can not reach 1kV. there are some HV opamps lile Apex PA series but they are very expensive(around 200$). can you suggest any idea/circuit/topology/component for this purpose?