Path: csiph.com!fu-berlin.de!uni-berlin.de!individual.net!not-for-mail
From: "chrisnd@privacy.net" <chrisnd@privacy.net>
Newsgroups: sci.electronics.components
Subject: Re: Question regarding the identification of a component
Date: Wed, 10 Sep 2025 11:17:09 +0100
Lines: 35
Message-ID: <mid1h5FducsU2@mid.individual.net>
References: <mialetF24nnU1@mid.individual.net> <68c0533e$4$10368$882e4bbb@reader.netnews.com> <mibg15F6fc5U1@mid.individual.net>
Mime-Version: 1.0
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 7bit
X-Trace: individual.net MyLj2HIM/j6JR8BVB52shwC4JwGGrn2nNBSZ4Q2M6nd3XB1N1b
Cancel-Lock: sha1:RP6bB1Ievd40E7CbBrfX3anH4EY= sha256:kI2Ik/9vCZV5yR5z0YsmOAE27TVxD2Gr4VDeFcuUyDY=
User-Agent: Mozilla Thunderbird
Content-Language: en-GB
In-Reply-To: <mibg15F6fc5U1@mid.individual.net>
Xref: csiph.com sci.electronics.components:6596

On 09/09/2025 21:12, Reinhard Zwirner wrote:
> bitrex schrieb:
>> On 9/9/2025 8:38 AM, Reinhard Zwirner wrote:
>>> Attention: fup2!
>>>
>>> Hello,
>>>
>>> In an older power supply unit for GM counter tubes, the high voltage
>>> (max. 1 kV) is generated by a normal push-pull voltage converter
>>> (switching frequency approx. 8 kHz). In the HV filter chain, this
>>>
>>> <https://s1.directupload.eu/images/250908/bsg2w6z7.jpg>
>>>
>>> capacitor is connected in parallel with the following strangely
>>> marked component of the same size,
>>>
>>> <https://s1.directupload.eu/images/250908/62iwvu9p.jpg>
>>>
>>> which my Far Eastern multitester identifies as an 8 nF capacitor.
>>> That could well be the case, but why the strange marking? A VDR? What
>>> do you think?
>>>
>>> Many thanks in advance for your hints.
>>>
>>> Best regards
>>>
>>> Reinhard
>>
>> Maybe "41C" indicates the transition temperature for a PTC?
> 
> The part behaves in no way as sort of resistor.

Unless it has failed, open-circuit?

Chris