音響專用獨立線性電源

obee

obee

Case


Rectification broad


Teddy Pardo's SuperReg


Install


Simon62's transformer


Cables using Mundorf Silver-Gold 0.5mm


Finished

anthony.cky

Very Nice

kuromitms

obee hing 整咗幾多錢？有無圖？材料詳情係邊到買，可否PM我，我都好想整

obee

kuromitms 發表於 2012-12-19 12:18
obee hing 整咗幾多錢？有無圖？材料詳情係邊到買，可否PM我，我都好想整 ...

Didn't count, cost should be around $3000.

obee

kuromitms 發表於 2012-12-19 12:18
obee hing 整咗幾多錢？有無圖？材料詳情係邊到買，可否PM我，我都好想整 ...

Breakdown:
Cap (4): $1000
Transformer: $600
Case: $250
DC Cable (4), plug (4 pairs): $700
Regulator (4): $1000
Misc (diode, bread broad, screws, solder): $200

iwantbd

very正!!

obee

iwantbd 發表於 2012-12-19 13:39
very正!!

師兄過掌.
小弟獻羞

iwantbd

obee 發表於 2012-12-19 14:16
師兄過掌.
小弟獻羞

有熱誠----有實際

obee

kuromitms 發表於 2012-12-19 12:18
obee hing 整咗幾多錢？有無圖？材料詳情係邊到買，可否PM我，我都好想整 ...

1. Topology:
Transformer 220V AC in -> Step down to: 15V, 13V, 9V and 9V (4 secondary outputs)
-> (optional on/off switch) -> diodes -> capacitor (4700uF or above is ok) -> Teddy's SuperReg -> output

2. About the capacitor:
According to Teddy, using 4700uF for that capacitor is enough, minimum should be 2000uF

3. About the Regulator:
Each regulator is a separate Teddy Pardo's SuperReg:
http://www.teddypardo.com/DIY/SuperTeddyReg.html

You can buy bare PCB from him ($8 each), it takes 1-2 weeks to ship to HK. You need to buy resistors and capacitors yourself and solder the resistors & capacitors by yourself.

You may also buy finished regulator from him ($59 each). This is highly recommend if you don't want to "折騰一番". Just tell him the output DC voltages you need for each broad after placing order, and ask him to suggest the DC input voltage.

4. DC Cable
DC cable, similar to power cord, does affect sound. So you should choose one that can produce good sound.

5. Other points to note
Each regulator supports 1A maximum, if you want higher current output, please use other regulator design (or ask Teddy to make one for you). My another DIY PSU using AMB Sigma 11 can support higher current (I tried that it can support 8A).
http://www.hiendy.com/hififorum/ ... &extra=page%3D1

ernestng

output 最尾係比12v 個d?

obee

ernestng 發表於 2013-1-2 12:26
output 最尾係比12v 個d?

yes ah.

ernestng

obee 發表於 2013-1-2 12:33
yes ah.

高手... 我好想知線性POWER SUPPLY 同"格離"POWER SUPPLY有咩分別?

obee

ernestng 發表於 2013-1-2 12:35
高手... 我好想知線性POWER SUPPLY 同"格離"POWER SUPPLY有咩分別?

線性 = Linear
格離 = Isolate?
我唔知"格離"係點?

ernestng

obee 發表於 2013-1-2 14:34
線性 = Linear
格離 = Isolate?
我唔知"格離"係點?

係,

線性 = Linear
格離 = Isolate

好想知佢地咩分別..

obee

ernestng 發表於 2013-1-2 14:35
係,

線性 = Linear

Isolation Transformer:

Isolating transformers, more commonly known as isolation transformers, are used to reject stray common mode and DC voltages, ground loop potentials, electromagnetic interference (EMI) and radio frequency interference (RFI) from being conducted through pure AC circuits. They are commonly used in AC-powered analytical equipment, medical devices, telecommunications equipment and audio systems. For example, an electrically noisy device such as a vacuum cleaner would be prevented from trickling its noisy interference back into the power grid to affect televisions or other monitoring equipment powered from the same local grid.

Read more: What Is an Isolating Transformer? | eHow.com http://www.ehow.com/about_510201 ... .html#ixzz2GnX2Tqia

Source: http://www.ehow.com/about_5102013_isolating-transformer.html

obee

ernestng 發表於 2013-1-2 14:35
係,

線性 = Linear

Isolation Transformer 係講隻牛. Linear PSU 係講PSU (Power Supply Unit), 再分 regulated 同 unregulated:
http://www.pc-control.co.uk/linear_psu.htm?oo=41647924

天下第一刀

用低頻交流電即使雙重穩壓也有一點交流聲,用LCD電視機的高頻電源板輸出的正弦波比較易濾除所有的干擾﹐我前後級CAS在用﹐感覺不錯

liang

ernestng 發表於 2013-1-2 12:35
高手... 我好想知線性POWER SUPPLY 同"格離"POWER SUPPLY有咩分別?

用过线性电源果只隔离牛罗去填海啦

SundayDriver

obee 發表於 2012-12-19 12:29
Breakdown:
Cap (4): $1000
Transformer: $600

請問 obee 師兄 DC Cable Mundorf Silver-Gold 0.5mm 同插頭在那裡買呢? D 插頭是否高品質的? 因我在鴨記見的都是普通野, 唔該晒