Inverting opamp..how to check with a scope?????
Posted: 01 Jun 2012, 21:28
So I am trying to invert a signal. No biggie. I am feeding the signal to pin 6 of a NJM2068. 5 to ground. 7 is output..check.
I matched the gain to the non-inverted signal, but on the scope, it doesn't look like my signal is inverted.
I'm using a digital scope and I wonder if it's not showing the invert by default?? Is that normal? I dont have a second probe to go between.
How else can I test polarity?
I am inverting the signal to send to a second amp in a 2 channel amplifier to bridge the outputs.
Heres the schematics. I know there are differences. I know the gain is different too. One is 6db and the other is 12db.
My amp is the hartke HA5000, I am referencing that and the 5500 as a mono amp source. you will notice..be default I cannot bridge the amp as it doesn't invert a signal to one of the power modules..
I pulled out the crossover section...I don't use that.
Do I need to get another opamp and invert again?
I matched the gain to the non-inverted signal, but on the scope, it doesn't look like my signal is inverted.
I'm using a digital scope and I wonder if it's not showing the invert by default?? Is that normal? I dont have a second probe to go between.
How else can I test polarity?
I am inverting the signal to send to a second amp in a 2 channel amplifier to bridge the outputs.
Heres the schematics. I know there are differences. I know the gain is different too. One is 6db and the other is 12db.
My amp is the hartke HA5000, I am referencing that and the 5500 as a mono amp source. you will notice..be default I cannot bridge the amp as it doesn't invert a signal to one of the power modules..
I pulled out the crossover section...I don't use that.
Do I need to get another opamp and invert again?