HV diodes
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From: TTman on 22 Apr 2010 02:24 Anyone know of a s/mount alternative for HV03-10 ? The circuit has 2 in series+ 2 in parallel. I could use more in series to get to 10KV rating/400mA TIA
From: Uwe Hercksen on 22 Apr 2010 03:38 TTman schrieb: > Anyone know of a s/mount alternative for HV03-10 ? The circuit has 2 in > series+ 2 in parallel. I could use more in series to get to 10KV > rating/400mA Hello, if you connect several diodes in series and parallel, you have to take care for an equal distribution of the voltage over the diodes in series and the current over the diodes in parallel. Parallel and serial resistors may help. Bye
From: Joerg on 24 Apr 2010 16:37 TTman wrote: > Anyone know of a s/mount alternative for HV03-10 ? The circuit has 2 in > series+ 2 in parallel. I could use more in series to get to 10KV > rating/400mA > TIA > A bunch of these in series? http://www.vishay.com/docs/88546/bym1050.pdf No where to find them, that's another story. And don't forget parallel resistors to equalize the reverse voltages, else ... phut ... *POOF* -- Regards, Joerg http://www.analogconsultants.com/ "gmail" domain blocked because of excessive spam. Use another domain or send PM.
From: Jim Thompson on 24 Apr 2010 16:53 On Sat, 24 Apr 2010 13:37:56 -0700, Joerg <invalid(a)invalid.invalid> wrote: >TTman wrote: >> Anyone know of a s/mount alternative for HV03-10 ? The circuit has 2 in >> series+ 2 in parallel. I could use more in series to get to 10KV >> rating/400mA >> TIA >> > >A bunch of these in series? > >http://www.vishay.com/docs/88546/bym1050.pdf > >No where to find them, that's another story. And don't forget parallel >resistors to equalize the reverse voltages, else ... phut ... *POOF* http://www.surplussales.com/semiconductors/Diodes-1.html http://www.voltagemultipliers.com/Aliases/LPs/High-Voltage-Rectifiers.html?gclid=CIynnK2boKECFQdkgwod2xemvw http://www.nteinc.com/Web_pgs/hvr.html http://www.kronjaeger.com/hv/hv/comp/rect/index.html ...Jim Thompson -- | James E.Thompson, CTO | mens | | Analog Innovations, Inc. | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | Phoenix, Arizona 85048 Skype: Contacts Only | | | Voice:(480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at http://www.analog-innovations.com | 1962 | The only thing bipartisan in this country is hypocrisy
From: John Larkin on 24 Apr 2010 17:41
On Sat, 24 Apr 2010 13:37:56 -0700, Joerg <invalid(a)invalid.invalid> wrote: >TTman wrote: >> Anyone know of a s/mount alternative for HV03-10 ? The circuit has 2 in >> series+ 2 in parallel. I could use more in series to get to 10KV >> rating/400mA >> TIA >> > >A bunch of these in series? > >http://www.vishay.com/docs/88546/bym1050.pdf > >No where to find them, that's another story. And don't forget parallel >resistors to equalize the reverse voltages, else ... phut ... *POOF* Modern controlled-avalanche rectifiers don't need equalizers for series operation; they don't have a hard negative-resistance behavior. Schottkies certainly don't; they just leak more as voltage goes up so tend to equalize on their own. At higher frequencies, the reverse voltage distribution is determined by diode capacitance and reverse recovery behavior, and resistors won't have much effect. We sometimes use step-recovery diodes in series to make high-voltage pulses. That should certainly have problems, but it works fine. John |