regarding sett-ability , no issues , no preferred range
in case that you are outa range og Ugs I did cover with values on board , single resistor change would solve that
in case that you are outa range og Ugs I did cover with values on board , single resistor change would solve that
ZM - For my THF-51S build, I have a 1000VA, 2X 48v secondaries with 18v and 12v secondaries transformer. 6 - 27,000uF capacitors (3 per channel).
Do you recommend motor run capacitor for each channel? If so, what size?
Do you recommend motor run capacitor for each channel? If so, what size?
motor-runs are cherry on top
biggest and badder you can squeeze in , connect in parallel with last cap in PSU
practically , don't go under 40uF , more - sky is the limit
is that xformer two separate windings of 48Vac each , or 96Vac center-tapped ?
biggest and badder you can squeeze in , connect in parallel with last cap in PSU
practically , don't go under 40uF , more - sky is the limit
is that xformer two separate windings of 48Vac each , or 96Vac center-tapped ?
xformer is two separate windings of 48v each
each channel will have it's own rectifier and CRCRC filter except for the bias circuits
found a pair of cbb60 100uF motor run caps PP film, cheaper then TP on a-zon
each channel will have it's own rectifier and CRCRC filter except for the bias circuits
found a pair of cbb60 100uF motor run caps PP film, cheaper then TP on a-zon
bingo
my dear Papa's Koan (first of them, F4) is made in similar fashion - had 800VA Donut with 4 secondaries , 18Vac each
then 4 bridges and separate cap bank for each channel
FW case being too sissy to squeeze in motor runs too ....., but- hey , that could be squeezed only in 500mm deep
edit : so , 800VA Donut , sum heat being around 150W , and singing all day long with peaks at (2x) 1W5/16R , in my workshop
but , I've put LED toobz , instead of neon ones
my dear Papa's Koan (first of them, F4) is made in similar fashion - had 800VA Donut with 4 secondaries , 18Vac each
then 4 bridges and separate cap bank for each channel
FW case being too sissy to squeeze in motor runs too ....., but- hey , that could be squeezed only in 500mm deep
edit : so , 800VA Donut , sum heat being around 150W , and singing all day long with peaks at (2x) 1W5/16R , in my workshop
but , I've put LED toobz , instead of neon ones
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When you mentioned that the Singing Bush had a bias circuit requiring a lower voltage, I found an.ANTEK 1000VA xformer with dual 48v along with 18v and 12v secondaries, I went with it instead of having to find room for multiple xformers.
I'd rather have room for capacitors instead of xformers.
Thanks for listing spec's for PS, I was hoping you'd list your recommendations.
I'd rather have room for capacitors instead of xformers.
Thanks for listing spec's for PS, I was hoping you'd list your recommendations.
Hi
I want know if is possible use linear amplifier as replacement transformer input JENSEN .
https://www.vishay.com › docsPDF
Designing Linear Amplifiers Using the IL300 Optocoupler - Vishay
ZM is possible in isolation galvanic T and 4N37?
I want know if is possible use linear amplifier as replacement transformer input JENSEN .
https://www.vishay.com › docsPDF
Designing Linear Amplifiers Using the IL300 Optocoupler - Vishay
ZM is possible in isolation galvanic T and 4N37?
asking elwood , or me?
not possible without major changes in circuit - input xformer is necessary part of Schade feedback loop , doing several things at once ( all explained in Papalecture , linked in first post) - galvanic isolation , Schade feedback , increase of input impedance
if you can find decent 600:600 xformer locally , try it
decent means - declared HiFi use ( 20-20KHz) , not Telephone range
Continue selling THF-51S THF-51N TOKIN SIT 2SK182ES 2SK180
2SK180 20 old usedNeed friends, send an email to contact:Email: 378632242@qq.com
2SK180 20 old usedNeed friends, send an email to contact:Email: 378632242@qq.com
I’m hoping with 68v I can use a cap multiplier if there is to much noise for my horns.
I would use the same cap multi as in a zen 9.
I will wait and see.
I would use the same cap multi as in a zen 9.
I will wait and see.
