|Chip Amps Amplifiers based on integrated circuits|
Please consider donating to help us continue to serve you.
Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
||Thread Tools||Search this Thread|
|29th April 2006, 02:31 PM||#1|
Join Date: Sep 2004
Copy of Kore-Eda pre ?
They are two new products from Sakura.
Maybe it will be easy to make a copy of the preamp ?
Can anybody identify the components in the preamp ?
As far as i can see they use:
1. Small transformer from Talema/India with 2x115V input and two 2.5VA 15V AC outputs
2. Two rectifiers composed from four normal diodes
3. Two bigger caps, probably 3300/25V Panasonic TS-HA?
4. 78xx and 79xx regs with two small electrolyt caps - decoupling caps ?
5. Preamp section with adXXX opamps ?
6. Small red tantalum caps close to opamps ?
7. Around opamps they are four resistors
8. One polystyren/aluminium input? output ? cap from BC ?
Can anybody identify more details and maybe create the schematic of this small pre ?
Who knows, maybe it sounds very good.
|3rd May 2006, 03:04 PM||#2|
Join Date: Sep 2004
This is the link for preamp picture :
I am completely electronic newbie and have no to much knowledge about electronics. In the last days i was just reading about opamp based pres and looked carefully on Kore Eda pre.
I found the SWCAD software from LT and i created a circuit, which could be the pre, but i am not sure about it.
Can anybody help and say if it is OK ?
Any ideas ?
|4th May 2006, 12:03 PM||#3|
Join Date: Oct 2004
You need to add a .1uf caps to the supply rails. I would also go over the datasheet,there are suggests for the resistors values. It may have a min. gain requirement also.
|Thread Tools||Search this Thread|
|Thread||Thread Starter||Forum||Replies||Last Post|
|Quad 606 copy||proba55555||Analogue Source||4||24th September 2007 11:58 PM|
|Cyrus PSX-R copy||dubh||Solid State||3||7th February 2007 04:59 PM|
|DAT Copy protection||richardsymes||Digital Source||16||30th July 2006 05:53 PM|
|Sure, copy an amp. . . It'd work but I'm looking for something different.||PhoenixFL||Tubes / Valves||6||13th May 2004 03:12 AM|
|Does anyone have a copy of WinAIRR 4?||M_Anker||Multi-Way||2||25th December 2001 05:57 PM|
|New To Site?||Need Help?|