This simple amplifier doesn't work without C1 and C2, and I don't understand why. No problems show up on my LTSpice simulations without them.
But without C1 and C2 in the breadboarded version, the output from the LT1007 is unstable, and experiences large swings when I touch anything connected to the circuit (the sensor, the DMM, the trim pot, etc).
Everything works as expected when C1 and C2 are added.
Just FYI, the sensor outputs 0-100mV. The purpose of the circuit is to provide an adjustable gain of around 2 to enable use of a PM-128, 200mV panel meter.
Thanks in advance.
Jim
But without C1 and C2 in the breadboarded version, the output from the LT1007 is unstable, and experiences large swings when I touch anything connected to the circuit (the sensor, the DMM, the trim pot, etc).
Everything works as expected when C1 and C2 are added.
Just FYI, the sensor outputs 0-100mV. The purpose of the circuit is to provide an adjustable gain of around 2 to enable use of a PM-128, 200mV panel meter.
Thanks in advance.
Jim
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