LM318: Amplifiers forum

Hari Prasath Perumal

Part Number: LM318

Hai,

I need to use LM318 as a voltge comparator. I need help with designing the circuit. The input parameters are +15v and +10v and I need to get the ouput as +5v.

With regards,

Hari

over 1 year ago

0 kai klaas69 over 1 year ago

Guru 140200 points

Hi Hari,

are you sure that you want to take the LM318 for this task? The LM318 is a dino OPAmp from 1976 and is no a rail to rail OPAmp either. Today much better suited OPAmp are available. And why not using a specialized comparator?

Hari Prasath Perumal said:
The input parameters are +15v and +10v and I need to get the ouput as

What do you mean by "input parameters"? Supply voltages? Or input voltages?

Hari Prasath Perumal said:
to get the ouput as +5v.

The output shall toggly from 0V to +5V?

What about all other parameters of this application like signal shape, input signal bandwidth, etc.?

Please give way more details.

Kai

0 Hari Prasath Perumal over 1 year ago

Prodigy 10 points

Hai Kai,

Thanks for the reply.

Suggest some op-amp IC that gives, output voltage that toggles from -4V to +4V. The output voltage should be ac voltage. I also want to know the circuit connection and calculation of the resistance.

With Regards,

Hari

0 Ron Michallick over 1 year ago in reply to Hari Prasath Perumal

TI__Guru**** 154086 points

Hello Hari,

Can you answer all of Kai's questions?

kai klaas69 said:
Supply voltages?

kai klaas69 said:
What about all other parameters of this application like signal shape, input signal bandwidth, etc.?