regulator

Status
Not open for further replies.
L

lee9587

New Member
i have an lm741 in my project and i am wondering if i can use +9,-9 instead of the maximum rating???also i have an external -12v source and i am wondering is it as simple as using an lm7809 to bring this to -9v or would i have a problem with over heating??

thanks
 

hi,
A 741 will work OK with +/-9V supplies.

The Vout will only swing to about +/-2.5V of the rail voltage, using +/-9V this will be approx +/-6.5V
 
Last edited:
The supplies don't need to be equal, so you can also run it from +9V and -12V without problem, eliminating the need the the lm7809.
 
Status
Not open for further replies.

Similar threads

S
  • Question
Linear voltage regulator?
Replies
8
Views
2K
Papabravo
F
  • Question
Phase cutting heater regulator with IGBTs?
Replies
0
Views
1K
Flyback
F
T
  • Question
Boost regulator
Replies
13
Views
2K
Tom120
T
M
  • Question
Low noise TEC driver design - adjustable linear voltage regulator
2
Replies
26
Views
4K
Tony Stewart
J
  • Solved
Phase Controlled MOSFET Half-Bridge?
Replies
8
Views
2K
schmitt trigger
S
Menu
Log in
Register
Cookies are required to use this site. You must accept them to continue using the site. Learn more…