ain_4
Differences
This shows you the differences between two versions of the page.
Both sides previous revisionPrevious revisionNext revision | Previous revision | ||
ain_4 [2016/08/10 20:25] – [Capacitors] latigid_on | ain_4 [2016/08/18 09:36] (current) – [Standalone use] latigid_on | ||
---|---|---|---|
Line 9: | Line 9: | ||
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, | ||
---- | ---- | ||
Line 17: | Line 19: | ||
^Type | ^Type | ||
^resistors^ | ^resistors^ | ||
- | | | + | | |
- | | | + | | |
^capacitors^ | ^capacitors^ | ||
- | | |4|10p|025X050|C1, | + | | |4|10p|025X050|C1, |
| |9|100n|025X050|C10, | | |9|100n|025X050|C10, | ||
| |3|10u|electrolytic 2,5-6|C9, C11, C19|remove 1 if powering from Core| | | |3|10u|electrolytic 2,5-6|C9, C11, C19|remove 1 if powering from Core| | ||
| |4|optional|025X050|C2, | | |4|optional|025X050|C2, | ||
^inductors^ | ^inductors^ | ||
- | | |2|BEAD|5MM|L1, | + | | |2|BEAD|5MM|L1, |
^ICs^ | ^ICs^ | ||
| |2|MCP6002P|DIL08|IC2, | | |2|MCP6002P|DIL08|IC2, | ||
Line 77: | Line 79: | ||
==== Headers ==== | ==== Headers ==== | ||
- | For connection to a [[Control Board]], use pin headers placed on the opposite side as the rest of the components i.e. follow the silkscreen markings. For standalone use, you probably want header pins (or sockets, or even bare wires if you wish) on the same side as the remaining circuitry. | + | For connection to a [[Control Board]], use pin headers placed on the opposite side as the rest of the components i.e. follow the silkscreen markings. |
+ | |||
+ | For standalone use, you probably want header pins (or sockets, or even bare wires if you wish) on the same side as the remaining circuitry. | ||
---- | ---- | ||
Line 84: | Line 88: | ||
==== Standalone use ==== | ==== Standalone use ==== | ||
- | For simplest results, use the complementary [[Control Board]]. Otherwise see below for header functions. | + | For simplest results, use the complementary [[Control Board]]. Otherwise see below for header functions |
Line 101: | Line 105: | ||
* 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_4.1470860752.txt.gz · Last modified: 2016/08/10 20:25 by latigid_on