a 723regulator for ASM1 question

[danial stocks]

>Im building a 723based reg. im using the 723datasheet schematics.
>its a +15 -15 0 reg.
>
>one of the parts is a 2n4898 which i didnt find yet.
>instead iv been given a bd224c (looks like the 7815 part box figure)
>
>is the bd224c a good replacement for the 2n4898 in the case of asm1 
>regulator?
>
Hi.. I thought the 723was a simple single supp adj reg, but I thnik you can 
ste it up for dual rail.. Generally if a trans has = or higher current 
rating, power diss and similar gain, you can substitute it..[watch out for 
pinout variations tho..
I have on occasions simply retrofitted complex ccts like this with a simple 
7815/7915 combo and it works well.. [did this in a TR808, havenit tried in 
ASR-1] but one thing to note is that there may not be any real advtg to the 
more complex cct, just that the particular engineer didnt know of the 3 term 
regs or they simply didnt exist at the time.. this is particularly the case 
with really old stuff. In a newer equip maybe there is a reason, I'd stick 
to the original cct ..
Cheers,
Dan
_________________________________________________________________________
Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com.

Share information about yourself, create your own public profile at 
http://profiles.msn.com.