Hi all,
After some expert advice, here's the brief...
Op Amp series with 1000x gain (preferably two op amps).
Powered by two 9V batteries or a 5V power supply.
Inputs and outputs in BNC/Coax connectors.
Boxed and built on PCB.
Now, being a computing science student I'm not 100% savvy on Op Amp tech or circuits. So any help would be appreciated.
I am aware that the infinite gain of Op Amps means that i must simply make the correct resistance ratio over the amps to create 500x gain in each amp, but even this stumps me!!
The batteries also confuse me. Two 9V batteries, one for +ive and one for -ive is my initial idea, however I must ensure that the batteries have an indicator for low power, I have looked at using TRIAC's to ensure that only correct voltage power is passed to the op amp...but another suggestion was a simple low power circuit with LED indicator? Again, i'm non the wiser. I also need the battery circuit to be switched on/off, so I can (in other words) select the power source to be used...
The input/output into the circuit/amps must be coax/BNC (same as the CRO connectors) how can I do this without leaving a signal floating at the output?
Finally, this is meant to be a two channel amplifier. So how can I duplicate this one system and power both at the same time from the same source.
Sorry guys, I know this may seem like a simple system, but it's not Java/C/Unix or MATLAB, so I'm a touch lost!!
Any help appreciated!
James W.
UK.
After some expert advice, here's the brief...
Op Amp series with 1000x gain (preferably two op amps).
Powered by two 9V batteries or a 5V power supply.
Inputs and outputs in BNC/Coax connectors.
Boxed and built on PCB.
Now, being a computing science student I'm not 100% savvy on Op Amp tech or circuits. So any help would be appreciated.
I am aware that the infinite gain of Op Amps means that i must simply make the correct resistance ratio over the amps to create 500x gain in each amp, but even this stumps me!!
The batteries also confuse me. Two 9V batteries, one for +ive and one for -ive is my initial idea, however I must ensure that the batteries have an indicator for low power, I have looked at using TRIAC's to ensure that only correct voltage power is passed to the op amp...but another suggestion was a simple low power circuit with LED indicator? Again, i'm non the wiser. I also need the battery circuit to be switched on/off, so I can (in other words) select the power source to be used...
The input/output into the circuit/amps must be coax/BNC (same as the CRO connectors) how can I do this without leaving a signal floating at the output?
Finally, this is meant to be a two channel amplifier. So how can I duplicate this one system and power both at the same time from the same source.
Sorry guys, I know this may seem like a simple system, but it's not Java/C/Unix or MATLAB, so I'm a touch lost!!
Any help appreciated!
James W.
UK.