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| Components and Circuits For discussions about component types, alternatives and availability, circuit configurations and modifications etc. Discussions here should be of a general nature and not about specific sets. |
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14th Jul 2021, 11:43 am
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#1 |
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Diode
Join Date: Apr 2020
Location: Ormskirk, West Lancashire, UK.
Posts: 2
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Sourcing Cermet thick film Resistors
Hello,
I am currently looking at repairing a Telequipment D75 oscilloscope. As a few threads on the forum have already discussed I have a problem with the EHT circuit. As suggested in the particular threads one of the culprits I believe is the High value “Cermet thick film resistors”, however I am struggling to source replacements. Does anybody know where I could source replacement resistors? And if not what would you recommend as a suitable alternative? The resistors are all 5% tolerance with a rating of 500mW and I would like to replace the following values (as per the telequipment service manual): 4.7 M Ohm 7.5 M Ohm 12 M Ohm 15 M Ohm 20 M Ohm 30 M Ohm Thanks in advance, Matt |
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14th Jul 2021, 12:18 pm
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#2 |
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Dekatron
Join Date: Feb 2007
Location: Lynton, N. Devon, UK.
Posts: 7,079
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Re: Sourcing Cermet thick film Resistors
I'd use Vishay VR37 types (or HVR37).
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14th Jul 2021, 7:02 pm
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#3 |
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Diode
Join Date: Apr 2020
Location: Ormskirk, West Lancashire, UK.
Posts: 2
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Re: Sourcing Cermet thick film Resistors
Ace! They look like just the ticket! Thank you for your prompt response kalee20
I should be able to make up the awkward values with a series / parallel arrangement Regards, Matt |
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