R
Robert Quinn
- Jan 1, 1970
- 0
The circuit linked below is intended to be a CCS amp with a gain of 2
and double pole LPF. The latter smooths an eight step, digitally
simulated sinewave (8 Hz, 1.5V swing at pin 3). Load is a 200 Ohm air
core solenoid.
The finished device will be a field calibration source for my Earth
micropulsation sensing coils. It operates from 4 x AA cells.
This is as far as I have progessed, based upon a combination of
existing circuits. I am having trouble finding the relevant
information to proceed.
http://home.iprimus.com.au/loungecinema/css.gif
1. It only outputs unity gain. With the LM358 I am hoping for at least
5V.
2. The 1.5V sinewave looks fine, until a load is connected. At 200R
the upper right half the the waveform distorts. At 25R the output goes
flat. As monitored across the load.
Any advice would be sincerely appreciated.
Robert Quinn
and double pole LPF. The latter smooths an eight step, digitally
simulated sinewave (8 Hz, 1.5V swing at pin 3). Load is a 200 Ohm air
core solenoid.
The finished device will be a field calibration source for my Earth
micropulsation sensing coils. It operates from 4 x AA cells.
This is as far as I have progessed, based upon a combination of
existing circuits. I am having trouble finding the relevant
information to proceed.
http://home.iprimus.com.au/loungecinema/css.gif
1. It only outputs unity gain. With the LM358 I am hoping for at least
5V.
2. The 1.5V sinewave looks fine, until a load is connected. At 200R
the upper right half the the waveform distorts. At 25R the output goes
flat. As monitored across the load.
Any advice would be sincerely appreciated.
Robert Quinn