|
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. |
|
Thread Tools |
22nd Aug 2015, 11:53 am | #1 |
Octode
Join Date: Nov 2005
Location: Ayrshire, UK.
Posts: 1,096
|
4313C valve
Hi folks
I've found another valve which I don't recognise and cannot find listed. It's a 4313C or CV75. It appears to be a cold cathode device so presumably an indicator of some kind. Any ideas? Thanks in advance, TimR
__________________
All those moments will be lost in time, like tears in rain. |
22nd Aug 2015, 12:21 pm | #2 |
Dekatron
Join Date: Aug 2007
Location: W.Butterwick, near Doncaster UK.
Posts: 8,923
|
Re: 4313C valve
Cold cathode Thryatron.Hope this helps.
__________________
G8JET BVWS Archivist and Member V.M.A.R.S |
22nd Aug 2015, 1:08 pm | #3 |
Hexode
Join Date: Jul 2003
Location: Leeds, West Yorkshire, UK.
Posts: 455
|
Re: 4313C valve
|
23rd Aug 2015, 12:57 pm | #4 |
Octode
Join Date: Nov 2005
Location: Ayrshire, UK.
Posts: 1,096
|
Re: 4313C valve
Excellent, thanks for the info folks. What were these typically used for?
__________________
All those moments will be lost in time, like tears in rain. |
24th Aug 2015, 9:28 am | #5 |
Dekatron
Join Date: Apr 2012
Location: Wiltshire, UK.
Posts: 13,951
|
Re: 4313C valve
They were used for pulse-forming or pulse-shaping: basically, the valve passes no current until a specific voltage is applied to the 'control' electrode - at which point the valve turns hard 'on' and current flows between the other 2 electrodes, and continues to do so [uncontrolled by the control-electrode] until the voltage across the main electrodes drops below a certain sustaining value, at which point the thing turns off again.
You'd typically find them used in electronic counters, oscilloscopes, waveform-generators, Radar gear, video processing/distribution, teleprinter systems, some heavy-duty power supplies [often associated with controlled-arc mercury vapour rectifiers], industrial welders and the like: anywhere where you need a circuit to 'fire' at a particular voltage. They're essentially the valve equivalent of a Thyristor/Triac. |