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Help needed on this valve circuit
Old 01-20-2020, 04:08 PM   #1
mig2830
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Default Help needed on this valve circuit

Hello,

I am puslede abort this valve circuit. Can anybody explain this in my eyes strange use of a valve?



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Old 01-20-2020, 04:31 PM   #2
Funksammler
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some sort of oscillating detector? What is it from?

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Funksammler
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Old 01-21-2020, 03:43 AM   #3
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Hi Funksammler,

It is the first amplification stage of a radar receiver. It is the Circuit around the LB and C23 that pusles me. Another oscillation stage in the output from the valve or a filter?

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Old 01-21-2020, 09:49 AM   #4
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It looks a bit like a variation on a Colpits oscillator without feedback. So it will oscillate when excited with the resonance frequency and quickly dampen without.

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Old 01-21-2020, 10:31 AM   #5
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That makes seance.

It helps shaping the Echo for the next amplifier before mixing to get the ZF-stage.

Thank you for the great help.

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mig2830
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Old 01-23-2020, 06:49 AM   #6
rv12p2000
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Hello mig 2830

What equipment is extracted from this part of the diagram ?
Is it possible to know the reference

thank

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RV12P2000
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Old 02-11-2020, 09:47 AM   #7
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Hello RV12P2000,

I think it is from the FuG 216 the first stage of the receiver, not sure.

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Old 02-11-2020, 01:18 PM   #8
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Hello mig2830

Thank you for your response

I consulted the fug216 notice in the receiver part I did not find this part of the diagram

https://www.cdvandt.org/D-Luft-T-4111-FuG-216.pdf

The arthur (cdvandt.org) site has many notices

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