Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
leonel said:I need a basic help! (I think...)
I have a regulated +5VDC and i want a -5VDC to power a opamp. What's the best scheme?
leonel said:To be honest... i was looking in your site and i didn´t find.
Can you put me a link or tell in what section it is?
leonel said:Ok thanks...
Why i need that?
- If i don't power my opamp (LM324N) with Vcc=+5V and Vee=-5V my current and my voltage gives me a value that it's not supposed to be...
For example, if R1=1K and R2=150R using the inverting configuration Vcc=+5V and Vee=GND, i do not have Vout=(R2/R1)*Vin.
Can anybody tell what's happening?
Regards
leonel said:To be honest i don't understand very well, but as far i understand i cannot supply my opamp with Vcc=+5V and Vee=GND using the inverting configuration!!!? Or it's possible and have good results?
leonel said:yes, it will do!! But i'll have to use LM324 to have the output 0.8-4V. Using MC1458 i do not have correct values (problems that Audioguru pointed)!!?
leonel said:Ok thanks...
I'll supply with +24VDC.
I think that´s no problem suplly my pressure sensor with the same +24VDC (it's a two wire connection: +24VDC and Iinput)!!??
Or you think i should use a transformer with two secondary output's?