Tony's Transformer DIY pics

[RaffT]

sir,

design specs naman for a trafo..

200V primary/110V@300mA sec/6.3V@2A

btw, I have been reading on your trafos, bakit mas gusto mo ang 2:1(220v:110v) and do a voltage doubler nalang...kesa 1:1(220v:220v)? 

[nucleus]

sir,

design specs naman for a trafo..

200V primary/110V@300mA sec/6.3V@2A

btw, I have been reading on your trafos, bakit mas gusto mo ang 2:1(220v:110v) and do a voltage doubler nalang...kesa 1:1(220v:220v)? 

pasingit

sa aking pananaw mas madali iwinding pag 2:1

[RaffT]

^may point ka din jan... at cguro para may space pa sa bobbin dahil 110v lang kailangan...

[tony]

sir,

design specs naman for a trafo..

200V primary/110V@300mA sec/6.3V@2A

btw, I have been reading on your trafos, bakit mas gusto mo ang 2:1(220v:110v) and do a voltage doubler nalang...kesa 1:1(220v:220v)? 

i favor voltage doublers when using ss rectifiers because of ease of winding coils and insulation requirements are not as difficult compared to traditional topologies.....

for small power amps and preamps, i favor hybrid rectification using tube and solid state rectifiers, even here, winding the traffo is much easier and insulation requirements are more relaxed....

this is a goothd read: http://www.turneraudio.com.au/education+diy.htm

[tony]

update:

these traffos have 1 3/4, 1 1/2, 1 1/4inch center legs for use on solidstate power amps:

[insomartin]

napaisip ako nang matindi dito ah...

[tony]

^bobbins are from DEECO, end brackets from edrel sison.....FETRONICS....

[panyero]

ngayon ko lang nabasa to+1 sir excellent wish makagawa din ako ng kahit simple lng na transfo.

[maldihtah13]

Sir balikan ko lang anong ibig sahihin nito

"2. core size equals 1 1/4 stacked to 1 3/4 inches"

Does it mean yun bobbin eh rectangular yung butas sa gitna?

Ang hirap kasi maghanap sa raon.

[tony]

Sir balikan ko lang anong ibig sahihin nito

"2. core size equals 1 1/4 stacked to 1 3/4 inches"

Does it mean yun bobbin eh rectangular yung butas sa gitna?

Ang hirap kasi maghanap sa raon.

yes, merong bobbin na ganyan sa deeco..

[Johannah Aleksandria]

May thread pala nito, thanks sir Tony! Magkano ba ang rewinder sir? kahit yung manual o yung pwede i-drive ng motor?

[RiDdLeR???]

Sir tony, mas malaki ba matitipid kung mag-diy ako ng traffo?  Plan ko gumawa ng 220V/220V isolation transformer na 1KVA.

Bentahan pala ng magnet wire at EI core eh per Kilo.  Magkano ba ang typical prices ng magnet wires at EI core.  Hirap na kasi kung di mo alam presyo. Yung transformer winder, magkano na rin ba?  

Maski sa DEECO, they take advantage of unsuspecting people, bentahan ba naman ako ng 1/4W 5% resistor at 1 petot each.

[tony]

Sir tony, mas malaki ba matitipid kung mag-diy ako ng traffo?  Plan ko gumawa ng 220V/220V isolation transformer na 1KVA.

Bentahan pala ng magnet wire at EI core eh per Kilo.  Magkano ba ang typical prices ng magnet wires at EI core.  Hirap na kasi kung di mo alam presyo. Yung transformer winder, magkano na rin ba? 

Maski sa DEECO, they take advantage of unsuspecting people, bentahan ba naman ako ng 1/4W 5% resistor at 1 petot each.

hinid ako sure na mas makakatipid, since i make all my transformers, i never bothered to check on the costs.....i do not think na makakatipid ka....i make my own traffos para masunod yung gusto ko, sonething not possible with off the shelf items....


a 1kVA isolation traffo will have a core of 1 3/4 stacked to about 3.5 inches...or a 2inch x 3 inch stacked...
i prefer the 2inch core, you can use bigger wire size.

[efren]

nice sir Tony, meron ka palang thread about transformers dito.

[tony]

nice sir Tony, meron ka palang thread about transformers dito.

i got 5 torroids, apparently surpluss, i checked the windings and they are suitable for 220volts...i made shuttles from cardboards and dismantled one.

[Johannah Aleksandria]

mano-mano ba rewinding mo dito sir? sayang yung toroid ko para sa mixer, nasira yung primary. naiwan ko na lang sa kaibigan ko at nagpalit ng conventional, di nman mganda ang resulta.

[tony]

^yup, mano-mano.....nakakita ako sa raon na babae nag rerewind ng torroid....

[Ikasamoko]

sobrang hirap pala iwind to...ipapasok mo pa sa butas sa gitna...waaaa....di pwede winding machine dito..

[tony]

sobrang hirap pala iwind to...ipapasok mo pa sa butas sa gitna...waaaa....di pwede winding machine dito..

kung mano-mano, pero meron namang winding machines, wala nga lang tayo...

[RiDdLeR???]

Saan nakakabili ng torroid cores? kahit surplus lang?