Agreed...
I find that if the diodes are the same type and batch, voltage sharing isn't usually a problem though.
Here's some more information including the use of Transil diodes for voltage sharing...
https://www.st.com/resource/en/appl...ion-on-fast-rectifiers-stmicroelectronics.pdf
I find that if the diodes are the same type and batch, voltage sharing isn't usually a problem though.
Here's some more information including the use of Transil diodes for voltage sharing...
https://www.st.com/resource/en/appl...ion-on-fast-rectifiers-stmicroelectronics.pdf
If you want a 1200V overkill diode: https://datasheet.lcsc.com/szlcsc/1808280335_STMicroelectronics-STTH1512W_C262970.pdf
Less overkill but way more expensive: https://datasheet.lcsc.com/szlcsc/1806051141_Vishay-Intertech-VS-20ETF12-M3_C222560.pdf
Anyone used these? https://www.mouser.ca/ProductDetail...uctor/GP10Y-E3-54?qs=NyKJzQ80QAyi05XCHOEXGw==
These are 2kV 500mA (DIOTEC)|(DIOTEC) HV2|Diodes - Rectifiers - Fast Recovery|LCSC
Less overkill but way more expensive: https://datasheet.lcsc.com/szlcsc/1806051141_Vishay-Intertech-VS-20ETF12-M3_C222560.pdf
Anyone used these? https://www.mouser.ca/ProductDetail...uctor/GP10Y-E3-54?qs=NyKJzQ80QAyi05XCHOEXGw==
These are 2kV 500mA (DIOTEC)|(DIOTEC) HV2|Diodes - Rectifiers - Fast Recovery|LCSC
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Capacitors parallel to diodess hort-circuit diode noise:
Correct Path: Diodes Or Rectifier Tube?
Eli Duttman is offline Eli Duttman
"Unfortunately, all PN junction diodes generate switching noise. That noise is objectionable. Vacuum rectifiers don't produce that noise. Fairly recently, high PIV Silicon carbide (SiC) Schottky diodes were introduced. Schottky diodes are "noiseless", while retaining the other virtues of SS rectification.
My advice is that you rectify the B+ with high PIV Schottky diodes."
Diodes switching noise in the 50Hz rectifier
Diodes
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"any noise passing a 20H choke?"
A typical choke starts to lose its ability to impede noise above about 1-5kHz. So yes any transient noise from the secondary winding leakage inductance that gets to a choke will likely pass straight through it.
A typical choke starts to lose its ability to impede noise above about 1-5kHz. So yes any transient noise from the secondary winding leakage inductance that gets to a choke will likely pass straight through it.
I use this rectifiers, even in Gubernator-71 45W/Ch SE amp with 850V B+
My B+ rectifier to go.
DF10-M Rectifier
My B+ rectifier to go.
DF10-M Rectifier
Sure, but will it pass the pi-filter that choke is in? That would depend on the HF properties of the caps.
I have never tested for mains noise but is CM noise a problem to an audio amplifier? That depends on its frequency I suppose.
How many? 😀
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Not only the HF performance of the caps, but the wiring layout, and parasitic coupling to audio circuits such as through heater winding and from wire runs, and ground loop from power transformer core to chassis to signal ground, and ...
Yes, everything in the universe is vibrating 🙂 but practically, with fast/soft recovery diodes how beneficial are snubbers?
Thinking about a way to put it gently, I am under the impression that with fast/soft recovery diodes there is no issue to solve because HF spikes are well damped by the secondary copper resistance in traditional EI core transformers. Otoh it might be of concern with low dcr toriods and 1N4007 but only in combination with other factors like routing, circuit sensitivity and others.
