Post by thread:[EE] I want to put 1KV on a 200 uf capacitor

Since I have 200V caps laying around from scrapped AT computer power supplies , I thought of stacking 5 of them and balancing the voltage with high value resistors and 200V zeners. Is there a better way ? Best Gus

> Since I have 200V caps laying around from scrapped AT computer > power supplies , I thought of stacking 5 of them and balancing the > voltage with high value resistors and 200V zeners. Is there a better > way ? My Big Boy's Book Of DC Supplies has a mains-driven 1100V 100mA circuit. There are 3 x 64uF 450V caps in series between V+ and 0V with a 25k 10W bleeder resistor across each cap

At 10:19 PM 8/15/2009, you wrote: >Since I have 200V caps laying around from scrapped AT computer power >supplies , I thought of stacking 5 of them and balancing the voltage >with high value resistors and 200V zeners. Is there a better way ? You'd need 25 capacitors (5 in parallel = 1000uF/200V) and then 5 of those sets in series to get 200uF/1kV. Resistors are the easiest way. If you have 5 200V zeners in series you'll get a lot of current flow if the voltage exceeds 1kV by a bit, whereas the caps have some ability to handle surges. Don't kill or maim (eg. blind) yourself, those voltages and energy storage amounts (100J) should be taken very, very seriously as they are potentially (so to speak) lethal. >Best regards, Spehro Pefhany --"it's the network..." "The Journey is the reward" spam_OUTspeffTakeThisOuTinterlog.com Info for manufacturers: http://www.trexon.com Embedded software/hardware/analog Info for designers: http://www.speff.com