vastly enhanced PID-Thijs
Choice of operational amplifiers: * the integrator has a OP27 which has a very low input voltage offset.
Connectors
Connector | Purpose | Description |
CONN1 | SMA signal input | |
CONN2 | SUB D9 signal input | It is supposed to be connected to a current transducer. The pin configuration fits a LEM IT 200-S Ultrastab. |
CONN3 | SMA setpoint signal | |
CONN4 | SMA monitor signal | gives the input signal or the input to the current transduver |
CONN5 | - | |
CONN6 | SMA monitor internal error signal | It gives the error signal that is given to the PID controller. The input signal is substracted from the setpoint signal. |
CONN7 | JAE 5V voltage supply | has to be connected to the front panel's coaxial power connector |
CONN8 | SMA monitor internal control signal | gives the output of the PID part before any other operation (e.g. filtering) is performed |
CONN9 | SMA TTL input fast shut down | if signal is high, controller is shut down fast |
CONN10 | SMA TTL input discharge integral part | if signal is high, short cuts the integral part in order to discharge the integral capacity |
CONN11 | SMA output signal | output of the controller signal |
CONN12 | SMA monitor output signal | |
CONN13 | SMA TTL input pick off setpoint signal | if signal is high, picks off the setpoint signal and gives it to the output signal |
CONN14 | JAE 5 Pin | |
CONN15 | XLR power plug | voltage supply |
Jumper
Jumper | Purpose | Description | Default Position |
J1 | ground connection for CONN2 housing | solder pads | open |
J2 | ground connection for housing | solder pads | open |
1J1 | sign of the setpoint input at the instrumentation amplifier at 1U1 | pins (2×2) | left to right, inverts signal |
1J2 | sign of the input signal at the instrumentation amplifier at 1U3 | pins (2×2) | left to right, inverts signal |
1J3 | sign of the current transducer signal at the instrumentation amplifier at 1U4 | pins (2×2) | open |
1J4 | chooses input signal either from CONN1 or CONN2 | pins (3×1) | middle and right pin (CONN1) |
1J5 | enables/disables an input offset | pins (2×1) | open |
3J1 | enables/disables optional low-pass filters | pins (3×1) | left and middle (disabled) |
3J2 | enables/disables optional high-pass filter | pins (3×1) | left and middle (disabled) |
3J3 | enables/disables an output offset | pins (2×1) | closed |
3J4 | enables/disables optional ideal diode | pins (3×1) | left and middle (disabled) |
3J5 | choose which TTL signal to use to shut down the controller (CONN10 or CONN9) | pins (3×1) | middle and right (CONN9) |
4J1 | if enabled, sets supply voltage to +12V instead of +15V | 4J1 and 4J2 should always be both enabled or disabled | open |
4J2 | if enabled, sets supply voltage to -12V instead of -15V | solder pads (as is 4J1) | open |
Dipswitches
New: Charts of all possible settings!
First amplification
setting | amplification | resistor |
0000 | 100 | 1M |
x000 | 50 | 1M |
0x00 | 10 | 100k |
00×0 | 1 | 10k |
000x | 0.1 | 1k |
Integral amplification
setting | amplification (*10 | 5) | resistor |
---|---|---|---|
0000 | 1 | 100k | |
x000 | 8.7 | 13k | |
0x00 | 6 | 20k | |
00×0 | 4 | 33k | |
000x | 2 | 100k |
setting | amplification (*10 | 6) | capacity |
---|---|---|---|
0000 | 10000 | 100p | |
x000 | 1000 | 1n | |
0x00 | 100 | 10n | |
00×0 | 10 | 100n | |
000x | 1 | 1u |
Differential amplification
setting | amplification (*10 | 9) | capacity |
---|---|---|---|
0000 | 1 | 1n | |
x000 | 1000 | 1u | |
0x00 | 100 | 100n | |
00×0 | 10 | 10n | |
000x | 2 | 1n |
* Dipswitch 2S4 resistors
setting | amplification (*10 | 9) | resistor |
---|---|---|---|
0000 | 1 | 10k | |
x000 | 8 | 40k | |
0x00 | 6 | 15k | |
00×0 | 4 | 6.8k | |
000x | 2 | 2.4k |
Final amplification
setting | amplification | resistor |
0000 | 0.0001 | 1M |
x000 | 0.1 | 1k |
0x00 | 0.01 | 10k |
00×0 | 0.001 | 100k |
000x | 0.0002 | 1M |
setting | amplification (with 1k @3S6) | resistor |
0000 | 0.1 | 100 |
x000 | 0.44 | 680 |
0x00 | 0.33 | 390 |
00×0 | 0.23 | 200 |
000x | 0.17 | 100 |
* in this case, the amplification can be chosen more precisely by combining several resistors
Switches
V2.1: July 2021
In Use
Reproduction Effort:
Mareike Hetzel; hetzel@iqo.uni-hannover.de
Various Experiments in Group Klempt
Voltage supply
Input signals
PID controller
Low-pass filter
High-pass filter
Ideal diode
Final amplification
TTL signals
Output offset
was | wieviel | E-Preis | Preis | Anmerkung |
---|---|---|---|---|
Leiterplatte | 1x | ??.?? € | € | 1/n von XXX EUR |
Gehäuse | 1x | ??.?? € | € | |
* | ?x | ??.?? € | € | … |
R,C | ??x | 0.02 € | € | Bauform 0805 |
Bestückung | ??.00 € | bei SRM | ||
Verschnitt | ?.?? € | |||
Summe | € |
What the next version should do better: (: abandoned, : WIP, : in the Schematic, but not the Layout, : done)
Version 2.1