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Old 04-07-2025, 10:48 AM
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bandersen bandersen is offline
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I assume there is 5,000 VAC or more across that resistor.

Standard resistor voltage ratings are as follows
1/2W = 350v
1W = 500v
2W = 750V

5 normal resistors is not enough voltage rating.
I suggest using Vishay VR68 resistors. 10,000 volt rated 1W.
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Old 04-07-2025, 11:27 AM
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Yamamaya42 Yamamaya42 is offline
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Quote:
Originally Posted by bandersen View Post
I assume there is 5,000 VAC or more across that resistor.

Standard resistor voltage ratings are as follows
1/2W = 350v
1W = 500v
2W = 750V

5 normal resistors is not enough voltage rating.
I suggest using Vishay VR68 resistors. 10,000 volt rated 1W.
TKS, That is what I was looking for, but was unable to find in all of the types they have to order.

On the way from Mouser.

VR68000001504JAC00
As always the shipping costs more than the part.

"What did the old one look like as far as wattage. And the schematic didn’t show that resistor that was in there ? "

The old one looked like a 50s-60s 1w part, but the bands were dark and not readable, tested at about 1m, schematic says 1.5, parts list only says (1.5m HV resistor 1w).
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Old 04-07-2025, 11:45 AM
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Quote:
Originally Posted by Yamamaya42 View Post
TKS, That is what I was looking for, but was unable to find in all of the types they have to order.

On the way from Mouser.

VR68000001504JAC00
As always the shipping costs more than the part.

"What did the old one look like as far as wattage. And the schematic didn’t show that resistor that was in there ? "

The old one looked like a 50s-60s 1w part, but the bands were dark and not readable, tested at about 1m, schematic says 1.5, parts list only says (1.5m HV resistor 1w).
And the correct one was not shown in the schematic, that’s odd
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Old 04-07-2025, 11:55 AM
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Yamamaya42 Yamamaya42 is offline
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Quote:
Originally Posted by timmy View Post
And the correct one was not shown in the schematic, that’s odd
It is, just very little info about it, it's there between the 2 1B3GTs.
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Old 04-07-2025, 01:40 PM
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Quote:
Originally Posted by Yamamaya42 View Post
It is, just very little info about it, it's there between the 2 1B3GTs.
Yes I see it but the sams gave no more info about that specific resistor
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