http://cgi.ebay.co.uk/John-Hornby-Skewe ... dZViewItem
JHS wrote:JHS built at least 2 different versions of this Booster, one for the use with the Zonk-Machine and the other as a standalone TB. The standalone version has an output cap, the other doesn't.
As far as I know the first bunch JHS TBs have PNP Ge-trannies and are similar to a RM.
analogguru wrote:
Anyway, here is a schematic which is closer, even when I doubt the 1n at the input - maybe it is 10nF
http://i139.photobucket.com/albums/q312 ... 2N4061.gif
analogguru
Solidhex wrote:Yo
Has anyone confirmed the input/output cap values for this? It drives me crazy how every picture you see is always at the wrong angle!
--Brad
biffa wrote:Same enclosure and circuit board means it's right?
So,if I took a ferrari shaped body,and a ferrari shape chassis,and built it up from what people who had never seen one told me,I'd have a ferrari?
The enclosure is just a bloody box,man
"and same circuit board",how do you know?
Some guy builds it,and says,"built from the original circuit",and you then say to me,"it must be right,it's the original circuit" (sic)
biffa wrote:There are many views on the correct circuit,so logically,most must be wrong
Also looking at photos taken at stange angles,to ascertain component values,seems to me an exercise in futility
AG said the fet had been read wrong,it was really a 2N4061. How often do you think this happens?
In the British pedal industry of the 60's&70's, they used whatever components would work that were at hand,other countrys i don't know
biffa wrote:Same enclosure and circuit board means it's right?
So,if I took a ferrari shaped body,and a ferrari shape chassis,and built it up from what people who had never seen one told me,I'd have a ferrari?
The enclosure is just a bloody box,man
"and same circuit board",how do you know?
Some guy builds it,and says,"built from the original circuit",and you then say to me,"it must be right,it's the original circuit"
There are many views on the correct circuit,so logically,most must be wrong
Also looking at photos taken at stange angles,to ascertain component values,seems to me an exercise in futility
AG said the fet had been read wrong,it was really a 2N4061. How often do you think this happens?
In the British pedal industry of the 60's&70's, they used whatever components would work that were at hand,other countrys i don't know
Much better is to start with a pedal 'everyone' is ok with,like a rangemaster,and tweak it till your ears are happy with the result
Build others of course,but getting hung up over a cap,when you don't have a mint example to check from,is anorak behaviour
Like train-spotting
Electric Warrior wrote:another clue for a .022 input cap: http://www.diystompboxes.com/smfforum/i ... #msg338505
biffa wrote:But really,british pedal builders would use whatever did the job,not what was 'correct'
Back then,components were not always available,which to me,makes researching an input caps value an exercise in futility
Best to worry about how to make it work the way you want
Start with what's accepted,then explore...
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