IC functioning
- bajaman
- Old Solderhand
Information
- Posts: 4549
- Joined: 26 Jun 2007, 21:18
- Location: New Brighton, Christchurch, NZ
- Has thanked: 595 times
- Been thanked: 2058 times
not easy to do, but if the IC op amp is in the circuit and you have the 9 volt power supply connected and turned on, measure the voltage at the output terminal of the op amp ( 2 terminals if dual op amp etc.) - it should read very close to 4.5v dc if the op amp is functioning correctly (assuming you have the correct passive components in place - if it reads 9v dc then you have a problem.
bajaman
bajaman
be kind to all animals - especially human beings
- marshmellow
- Cap Cooler
Using the tools you were given by nature: tongue, wet fingers, ...
You will get better with more experience.
You will get better with more experience.
- lolbou
- Old Solderhand
If it should read 4.5V, use a LED and resistor...
ex: a 2.2V:20mA LED with a 4.5V voltage supply should have a (4.5-2.2)/0.020 = 115 ohm resistor in series not to burn.
If the LED lights correctly, then you're close to 4.5V...
ex: a 2.2V:20mA LED with a 4.5V voltage supply should have a (4.5-2.2)/0.020 = 115 ohm resistor in series not to burn.
If the LED lights correctly, then you're close to 4.5V...
- Are you a mod or a rocker?
- Uh, no, I'm a mocker.
- Uh, no, I'm a mocker.