Bernard's 1970s Solid–State Oscilloscope – Anybody tried building it? - UK Vintage Radio Repair and Restoration Discussion Forum

Chris55000 · 4th Sep 2021, 11:08 am

Hi!

Anybody ever attempted to build this?
https://worldradiohistory.com/UK/Ber...cilloscope.pdf

Chris Williams

Sideband · 4th Sep 2021, 3:20 pm

FG Rayer was a well known contributor to Radio Constructor and his designs always worked well. It's a pity there are no specs shown with that scope but it is likely only suitable for audio and possibly low RF up to a few Mhz perhaps. I suspect it will work quite well for audio if it's limitations are appreciated. Some thought has gone into the design and it looks far better than some of the simpler designs I've seen. I think it would be a worthwhile project to give a good insight as to how analogue scopes work.

Cobaltblue · 4th Sep 2021, 3:46 pm

This seems to have more than a passing resemblance to the 1973 PW student oscilloscope, and I did build that in around 1976.

I made a lot of changes due to using a 3JP1 tube which ISTR had PDA.

https://worldradiohistory.com/UK/Pra...PW-1973-08.pdf

Cheers

Mike T

Ed_Dinning · 4th Sep 2021, 8:10 pm

Hi, there was also a design in WW at about the same time, but it used op amps and actually had peaking chokes in the collectors of the Y amp output transistors, b ut effectively a similar circuit.
I got the electrical apprentices at Thorn's cooker plant in Spennymoor to build it as a training exercise and it worked very well.
With a few mods it would drive a 6" VCR97

Ed

4th Sep 2021, 11:08 am	#1
Chris55000 Nonode Join Date: Aug 2007 Location: Walsall Wood, Aldridge, Walsall, UK. Posts: 2,868	Bernard's 1970s Solid–State Oscilloscope – Anybody tried building it? Hi! Anybody ever attempted to build this? https://worldradiohistory.com/UK/Ber...cilloscope.pdf Chris Williams __________________ It's an enigma, that's what it is! This thing's not fixed because it doesn't want to be fixed!

4th Sep 2021, 3:20 pm	#2
Sideband Dekatron Join Date: Oct 2003 Location: Croydon, Surrey, UK. Posts: 7,567	Re: Bernard's 1970s Solid–State Oscilloscope – Anybody tried building it? FG Rayer was a well known contributor to Radio Constructor and his designs always worked well. It's a pity there are no specs shown with that scope but it is likely only suitable for audio and possibly low RF up to a few Mhz perhaps. I suspect it will work quite well for audio if it's limitations are appreciated. Some thought has gone into the design and it looks far better than some of the simpler designs I've seen. I think it would be a worthwhile project to give a good insight as to how analogue scopes work. __________________ There are lots of brilliant keyboard players and then there is Rick Wakeman.....

4th Sep 2021, 3:46 pm	#3
Cobaltblue Moderator Join Date: Dec 2010 Location: Exeter, Devon and Poole, Dorset UK. Posts: 6,864	Re: Bernard's 1970s Solid–State Oscilloscope – Anybody tried building it? This seems to have more than a passing resemblance to the 1973 PW student oscilloscope, and I did build that in around 1976. I made a lot of changes due to using a 3JP1 tube which ISTR had PDA. https://worldradiohistory.com/UK/Pra...PW-1973-08.pdf Cheers Mike T __________________ Invisible airwaves crackle with life or at least they used to Mike T BVWS member. www.cossor.co.uk

4th Sep 2021, 8:10 pm	#4
Ed_Dinning Dekatron Join Date: Jan 2004 Location: Newcastle upon Tyne, Tyne & Wear, UK. Posts: 8,194	Re: Bernard's 1970s Solid–State Oscilloscope – Anybody tried building it? Hi, there was also a design in WW at about the same time, but it used op amps and actually had peaking chokes in the collectors of the Y amp output transistors, b ut effectively a similar circuit. I got the electrical apprentices at Thorn's cooker plant in Spennymoor to build it as a training exercise and it worked very well. With a few mods it would drive a 6" VCR97 Ed