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mtwieg, thanks for your reply. Unfortunately I did check all capacitors and used the recommended ones by the manufacturers. Actually this is the first time I see that happend, that is why I'm asking for assistance.
Thanks again
Hello, Im working on a system that requires the following voltages 1.2 V, 3.3 V and ±5 V, all from a unregulated 7 to 9 V input source. Anyway, Here I attached my schematic so may some one can notice what is going on, because when I power one the board the current starts at few mAmps and...
Finally I make a kind of digipot, just like m.mokhtar recommends, using transistors and resistors just like I found in the L200 voltage regulator datasheet, well with the respective modifications for my needs. Thanks for your support.
Hello, again. At this moment I think I figured out how to solve it. I found a paper that uses a current mirror (**broken link removed**) so making the needed modification I could achieve the current control. Thanks everyone for your assistance.
amitjagtap, the operating frequency goes from 1 Hz up to 30 Hz. FvM, well about the current and voltage I was based-on a book named "Electrotheray using in Physiotherapy, Martin Rodriguez (Spanish Edition)" and stands that there are two ways of stimulate, using HV above 80 V with currents below...
Hello everybody, I'm working on a T.E.N.S. unit that has a maximum output voltage of 30Vpp (constant), my current system can generate different waveforms such as rectified sine wave, square wave, biphasic square wave, etc. Taking into consideration that the output voltage is "fixed" I want to...
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