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Hi Klaus,
& thanks for your feedback. However, this scaling cannot be cleaned with any "soft" methods. I think it is some kind of oxidation caused by the heat and the surrounding air - so likely quite natural actually but still a blockage to full heat transfer.
I think I will contact Weller...
Hi all,
I have a likely quick question that I would appreciate your feedback on, if possible ...
As it is I have a Weller WSP-80 soldering iron and occasionally the contact surface between the heater element and the tip is "scaled" with a grayish layer of "something". I reckon this may limit...
Re: "Audio" DAC settling time - how to find out?
Hi ... if you only need 16 bits you might be able to use some of the older audio DACs like AD1862, PCM1702, PCM56, PCM58, PCM63, PCM1704 or similar. E.g. the settling time for the PCM1704 is specified to be:
Settling Time...
Hi again,
I am now testing the circuitry based on the LT3652.
However, it performs "below par" for some reason (I have attached the schematic to this thread).
First, it doesn't start up until the voltage reaches ~15 volts even if the boost supply is designed as I can see it should be. This...
Hello :-)
I'm in the process of designing a solar charger based on the LT3652 (see attachment). However, I'm not sure how to polarize C3.
Linear in their datasheet (see attachment) writes on p. 9 - boost pin - that the operating range of the boost pin relative to the switch pin is 0 to 8.5...
Hi LvM & FvM
Thanks again for helping out. Very interesting schematic FvM ... I've tried to compare it to an integrator that is not balanced and in terms of measurement results it is noticably more linear than the un-balanced version. Hmmm... I don't intend to ask too much of you two - I find...
Hi FvM
- thanks again for answering. Any chance I can ask you to give me a link or an illustration of a single-ended transistor integrator circuit that will work in this context? I can't really visualize it so would very much appreciate seeing it elsewhere ....
I've also made a search on the...
Hi FvM and LvM,
Thank you both for replying. Your feedback has given much food for thought not least realizing that the single transistor Miller integrator is not an "integrator" in the normal sense (LvM's post further up/down (which is it :-? ) the thread).
@ FvM: The performance of the...
Hi Ibrahim,
Good to hear that the schematic was of good use - kudos to James Lawson. As I myself am in a process of learning about D/S converters I do not have any more schematics but a suggestion is that you try to change the values and see what happens. Good luck with your graduation project...
Hi egyeng,
You might find this schematic helpful. It is a CT topology.
It is a second order design, and was originally set up by a James Lawson in the UK. It is not in verilog but in LTSpice (LTSpice - can be downloaded from Linear Technology - Design Simulation and Device Models should you be...
P.S.: For your and other who may be interested I also attach Bruno Putzeys paper on how to design a delta-sigma A/D converter as well as a cut-out from this article of the loop-filter he uses.
Cheers,
Jesper
Hi again,
Yes, my apology for not making it clearer. What I'm trying to accomplish is something like what is shown in the delta-sigma attachment, however, in a third order version and using very simple transistor couplings like e.g. a combination of common emitter or common basis.
I...
hi again FvM,
I was wondering - do you know if I can use a combination of a coil and a capacitor around the transistor to get a second order filter in one stage? If so can you say what the schematic will look like (maybe if you have a link?) Or is it in theory/practice better to only use...
Hi LvW - thanks for replying so promptly. I am in the process of making a hopefully superb delta-sigma A/D converter and based on my experiences very simple transistor circuitries can sound outstanding (to my preferences).
I'll just draw up a circuitry of what I intend to make and will post it...
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