Hello, I have been trying to make a PSD circuit using the attached. Can someone explain what the SYNC part of the circuit is? I have a strain gauge bridge circuit voltage which has been amplified by a 3-Op-Amp Instrumentation amplifier and this amplified voltage is the input to the PSD and someone says that the AC excitation supply should be used as the reference.
Im not sure what this means. I tried using a CMOS 4053 as the switch and I flicked between the input voltage and the reference coming from the supply using a square wave generator but didnt get a rectified output.
Can anyone offer any advice?
Sorry forgot to upload the pic. Here it is.
Im not sure what this means. I tried using a CMOS 4053 as the switch and I flicked between the input voltage and the reference coming from the supply using a square wave generator but didnt get a rectified output.
Can anyone offer any advice?
Sorry forgot to upload the pic. Here it is.
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