ain_4
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ain_4 [2016/08/13 17:13] – [BOM v1.2] latigid_on | ain_4 [2016/08/14 09:45] – [Schematic] latigid_on | ||
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The circuit is a very simple series of two inverting amplifiers per channel. The first is a TL072 powered from +12/-12V, while the second is an MCP6002 powered from 3v3/0V (ground). It's possible to preset the ranges (see below) but it's probably more useful to use the associated [[Control Board]]. | The circuit is a very simple series of two inverting amplifiers per channel. The first is a TL072 powered from +12/-12V, while the second is an MCP6002 powered from 3v3/0V (ground). It's possible to preset the ranges (see below) but it's probably more useful to use the associated [[Control Board]]. | ||
- | For bipolar operation, a +5V reference may be switched in. The output of the first stage is interrupted by a pot in order to attenuate the signal. The second stage has variable | + | For bipolar operation, a +5V reference may be switched in. The output of the first stage is interrupted by a pot in order to attenuate the signal. The second stage has switchable |
+ | |||
+ | Note the gain calculation, | ||
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* with a 100k pot facing you, solder the left leg to 0V(ground) | * with a 100k pot facing you, solder the left leg to 0V(ground) | ||
+ | * with the pot turned anticlockwise, | ||
* centre to WIPER | * centre to WIPER | ||
* right to LEG | * right to LEG |
ain_4.txt · Last modified: 2016/08/18 09:36 by latigid_on