[Ktechlab-devel] more circuits/ phase angle

 [Ktechlab-devel] more circuits/ phase angle From: Alan Grimes - 2008-08-24 15:42:32 Attachments: transimpedance2.circuit ```I've been playing with transimpedence amplifiers again. The starting place this time is this module: http://www.raleighaudio.com/rakk_dac_2.htm The first circuit comes from the DAC datasheet. The second one is my attempt at a discreet fully differential stage. (I think the 2k resistor on that one is wrong though I don't know what I should put there.) The third is a discreet single-ended stage. One problem I have with comparing the outputs of these circuits is that each of the signal sources has a different phase angle therefore it's impossible to line up the oscilloscope graphs exactly. I had made a patch long long ago which cleaned up the function generators and allowed you to enter in a phase angle in multiples of PI (180 degrees = 1 pi). This worked well enough that I was able to simulate a 3-phase generator using three voltage signals... In the future pre-fab "Wye" and Delta generators should be added too. -- Ron Paul: A man of Peace. Chemistry.com: A total rip-off. Powers are not rights. We did not invade Iraq, the government did. ```

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 [Ktechlab-devel] more circuits/ phase angle From: Alan Grimes - 2008-08-24 15:42:32 Attachments: transimpedance2.circuit ```I've been playing with transimpedence amplifiers again. The starting place this time is this module: http://www.raleighaudio.com/rakk_dac_2.htm The first circuit comes from the DAC datasheet. The second one is my attempt at a discreet fully differential stage. (I think the 2k resistor on that one is wrong though I don't know what I should put there.) The third is a discreet single-ended stage. One problem I have with comparing the outputs of these circuits is that each of the signal sources has a different phase angle therefore it's impossible to line up the oscilloscope graphs exactly. I had made a patch long long ago which cleaned up the function generators and allowed you to enter in a phase angle in multiples of PI (180 degrees = 1 pi). This worked well enough that I was able to simulate a 3-phase generator using three voltage signals... In the future pre-fab "Wye" and Delta generators should be added too. -- Ron Paul: A man of Peace. Chemistry.com: A total rip-off. Powers are not rights. We did not invade Iraq, the government did. ```