Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.
I heard lot of good things about the weller WESD51. It is slightly over my budget. I research into the Hakko FX888. It is good but discontinued model. FX888d is the current model. But, not sure if any of guys here used it. Thank you for the advice.
Recently, I start looking for a soldering station for my freelance project. Did some research. Here are 3 models I am looking. My budget is lower than $100. Not sure if you guys can give me some word of wisdom on this. What your experience with any of these models. Thank you very much.
Weller...
PSRR and CMRR is worsen by the mismatch of the device. How to simulate it in spectre to get the reasonably close to reality result without using monte carlo. Thank you.
what is the commonly used equation for npn current gain(base to collector) if I know the followings.
doe(doping of emitter), dob(base), doc(collector), width_base(the base width between the emitter and collector) and the area_ec(the area of the emitter facing collector).
---------- Post added...
although PFM is comparator based. Each block in the whole regulation loop has its own time delay. that could translate into phase shift. but. why we usually are not concerned about the its compensation. for example,for a system, the clock is running around 10uS. The comparator could easily eat...
I am also learning how to design PFM mode boost. can anyone help suggest how to compensate the regular PFM loop. since the comparator is used how to do the loop stability analysis? Thank you.
With Vcc=5V boost converter, plan to charge up a 50nF cap to 200V with boost. There is no resistive load. Cap load only. Any good design reference and equation. Other, there is other better way to achieve it? Thank you.
I gonna use the P-well resistor in my design. But, I am concerned about the its accuracy. I know that is the value will be changed by difference bias voltage. but by how much percentage? Also, will that be too leaky(current) around 160C? Can someone help shed some light on it? Thank you very much
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
