15 Volts is a bit high for this, But You can by using an LM7660 to create a negative supply.
Do a search for the data sheet and it will give you a schematic.
This Somewhat depends on How much current you need?
What are you trying to operate with the +/- 15 volts?
I am currently running the comparator using +15V and ground but for some reason it is not giving me a very good output with an AC 2V peak-peak 40kHz signal. I thought maybe if I provide a -15V rail input to it it might work better.
The AC signal is a nice sinusoid but as soon as I connect it to the inverting and non-inverting inputs of the opamp it distorts the signal.
I am currently running the comparator using +15V and ground but for some reason it is not giving me a very good output with an AC 2V peak-peak 40kHz signal. I thought maybe if I provide a -15V rail input to it it might work better.
The AC signal is a nice sinusoid but as soon as I connect it to the inverting and non-inverting inputs of the opamp it distorts the signal.
I am trying to build a Zero Voltage Switching controller for an application. The output of the comparator would be used to drive some FET's.
Could you suggest any opamps that would be suitable for generating a square wave of 50% duty and the same frequency as the sine wave input into the opamp?
I am trying to build a Zero Voltage Switching controller for an application. The output of the comparator would be used to drive some FET's.
Could you suggest any opamps that would be suitable for generating a square wave of 50% duty and the same frequency as the sine wave input into the opamp?
Hi,
Your input is getting distorted since it is exceeding the limit of -0.3V of the comparator on the negative side. Your -ve supply voltage idea will work, even if you give a -5V supply. But before that, you can try feeding the input signal through a resistor (say about 3.3K) and clamp the -ve peak of the input at the comparator using a diode connected to ground. You should connect the signal to +ve input of the comparator and -ve input of the comparator to be connected to ground through another 3.3k resistor.
You can also see the data sheet of LMV761 for your application.
Regards, Laktronics