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Hi guys.
I've just bought frequency inverter SCANDIALOGIC SL8000-3 (18A Cont, 30A Max), like this one. It works fine with standard motor (50Hz, 400V, 1450 rpm).
But in menu I do not see and can not enter the parameters of the motor itself: speed, frequency, voltage, etc. Does anyone have...
Hello guys need your help.
I have two three-phase generators – one with power about 20 kW, and other with bigger power (about 50 kW). But I always must use the bigger one because of phase (current) unbalancing near 40-50% (which I could not correct for some reasons). From my calculating, for...
Thanks, LvW. Maybe some memories about part number from LTC could be helpful.
I understand, that it is an active low-pass filter.
Couple years ago friends give me high-voltage power supply unit from old optical system (laser source from 1980s). There was voltage multiplier (near 20kV) and...
I've test it without filter stage.
In fact, filter gain in circuit equal to 1 (instead putting R12 to the ground I left it sealed off, R11 = 0r).
Thanks for your replies. I made some replacement today: instead of U1:A/B, U2:A I use AD623.
It works fine.
Output voltage of U2:B is 1.65V. The output of U2:A in this case 1.65 (when inputs of U1:A/B are connected together).
When signal occurs on inputs of U1:A/B the output changes U2:A like 1.65+"2"*(V1-V2). This means that the differential part work correct, it seams that input amplifiers U1:A/B...
Thanks, FvM.
I'm already made a PCB (only with smd 1206 components), it checks with scheme, so my circuit is correct. There is also a digital part, that works fine. Also grounding is correct. But anyway, I do not expect that amplifier will not work. After all I use the prototyping board with...
Hello everyone. Sorry for my bad English.
I need some help with the instrumentation amplifier.
Look at the analog part of my scheme below.
I'm using 3-OpAmp scheme on MCP602 operational amplifiers (U1:A, U1:B, U2:A), filtered reference (U2:B), active filter
(U3:A), single supply on ADP3303 -...
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