17-03-2019, 08:18 AM
I use a lot of extra low ESR 500V electrolytics in my HV life. ESR is about 0R015.
These are mainly RIFA/BHC (now Kemet) PEH169 or PEH200 series 3,300uF or 4,700 uF @ 500V. Note that these are very different animals from the caps in small SMPS systems - these are BIG!
Used to use them by the pallet load for solid-state Tesla Coils, electromagnetic can crushers, rail guns etc.
Need to be careful... They store a lot of energy and need respect.
Most of mine came from huge online UPS systems They are used in the inverter section to smooth the DC on the input side. Every couple of years they have to be changed to keep the systems in warranty.
We had 100s of these almost brand new huge expensive caps going to WEE recycling, so I pulled rank and rescued them. They are 130 quid or so each to buy and I had about 400. Most were eventually sold for charity, but I still have 30 or so.
These are mainly RIFA/BHC (now Kemet) PEH169 or PEH200 series 3,300uF or 4,700 uF @ 500V. Note that these are very different animals from the caps in small SMPS systems - these are BIG!
Used to use them by the pallet load for solid-state Tesla Coils, electromagnetic can crushers, rail guns etc.
Need to be careful... They store a lot of energy and need respect.
Most of mine came from huge online UPS systems They are used in the inverter section to smooth the DC on the input side. Every couple of years they have to be changed to keep the systems in warranty.
We had 100s of these almost brand new huge expensive caps going to WEE recycling, so I pulled rank and rescued them. They are 130 quid or so each to buy and I had about 400. Most were eventually sold for charity, but I still have 30 or so.
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