Homepage   Forum     WEB     BBS  
Forum Thread List             
 Homepage  >> RFEDA FORUM  >> Analog Circuit Design [View In Forum]  [New Post In This Forum]  
 Title Author Views/Replies Posted at
  555 ASTABLE SQUARE WAVE GENERATOR
Hi ppl.. I need help & advices on the following problem, How to configure a NE555 chip to achieve a continuous square wave with a frequency of 1300Hz & 50% Duty Cycle? Pls advice.. Thank ...

saigu 3/2 2008/8/27 00:07
  anyone know how to make polystyrene cutter
helo..im student from malaysia.! this is my second year project. anyone can help me how to design polystyrene cutter circuits??

rickli 3/7 2008/8/27 01:22
  Please recommend some papers about level shifter.
Please recommend some papers about level shifter. Thanks.

rickli 6/5 2008/8/27 00:51
  How to do two tone test in Hspice?
Thank you very much!

addxjyx 4/1 2008/8/27 00:34
  help: about the design of bandgap reference
Hi,all: Nice to meet all! I'm designing bandgap reference based on the book of Razavi: <>. My circuit structure is same with that in...

chdd 5/1 2008/8/27 01:36
  RF Oscillator Design Guide
hello, i need to build collpits, hartley, and clapp oscillator using transistor, but i'm confused on the design step. anybody can help me??

nnxd 5/1 2008/8/27 00:27
  220W Power Amplifier for about 50Hz Sine
Hi, I look for a amplifier for pure sine signal. Any suggestion ?

btcdtc 4/5 2008/8/27 01:28
  High speed op amp circuit problem
Hi, I'm trying to build a non-inverting gain circuit using one of several possible op-amps (Analog AD8000, National LMH6702, LMH6703). I am following the manufacturers recommended design, but ha...

yvling 6/15 2008/8/27 00:27
  guitar effect ( wah pedal)
Can anyone help me, i'd like to build my own wah-wah pedal. Basically it's a bandpass filter and the mid-frenquency change to activate the effect. the frequancy range of a guitar is 80Hz to 1,2kHz ...

stgod 4/9 2008/8/27 01:02
  Help me about voltage detector
Dear all, Voltage detector has a long delay time from active to inactive, so the CP test time is long if we want to test the reset threshold. Sometimes we trim the input resistance and sometime...

z315 5/1 2008/8/27 01:11
  TSMC 0.18um transistor mismatch model
Hi ALL, I am using TSMC 0.18um design kit, and I noticed that some transistors (in the tsmc18rf) library are named "nmos2v_mis" which are the mismatch model of the transistors. My question is, ...

ybyygu 4/4 2008/8/27 01:25
  need help on power amplifier
hai guy..! i am here to get to know some information on power amplifier type AB...ehmm is there possible to design power amplifier type AB on RFID application at freq 868 Mhz..?? need opinion...

ct731 4/17 2008/8/27 00:42
  is this an amplifier?
i guess this circuit is an amplifer,but it 's some different from conventional amp this circuit is a part of a fold-cascode amp,if it's an amp,then it's a booster it 's used to generate the biase v...

fujun2013 3/18 2008/8/27 01:19
  Hspice .measure question
I run a amplifier AC simulation with hspice. I wonder how can i get the output gain at different input signal frequency(such as 1kHz) by .measure? thx.

yutcxa 5/3 2008/8/27 00:13
  chopper stabilization amplifier question
Hi"" i designed a chopper amplifier the differential output signal like attached file. why the spike is so large? can anybody now why ,is it normal? i often see the output signal will into a lo...

398338 3/3 2008/8/27 01:10
  NOISE ANALYSIS
Hello All, I wanna to make some noise analysis for a capacitive sensor. The plate is moving up and down therefore the capacitance value is changing. could you plz help me hw i can start, i am interes...

dongyea 5/1 2008/8/27 00:01
  Flyback SMPS Switching Noise
Hi, Can someone who are good in switching power supply noise countermeasure , gives me some advices, guidances and references such as books or useful articles on how to solve that kind of problem.

zunwang 4/2 2008/8/27 01:20
  bjt and mosfet
detailed course notes from ucsd on bjt and mosfet circuits

scuzt 4/1 2008/8/27 01:10
  how to realize a rail-to-rail amplifier in low supply-voltag
I need to design a rail-to-rail ICMR amplifier in low supply voltage. I find in almost the papers the rail-to-rail amplifier(eg, n-different input) is stressed on high ICMR, but i need much lower ICMR...

rickli 4/11 2008/8/27 01:37
  bessels high pass filter
hi, does anyone know of a besseles high pass filter.. i have not been able to find any sort of informationon it. for example its chararcteristics etc.. can someone give me some information on it or ...

scuzt 4/4 2008/8/27 01:38
  About regulator ripple
Hi all, I'v built a LDO voltage regulator circuit, 3.3V input, and 1.5V output. But there is very large ripple in the output voltage. How can I suppress this ripple? Thanks & Best Regards Anal...

z315 4/10 2008/8/27 01:45
  How can I get op-amp model in Hspice?
I wanna design a circuit containing comparator and integrator. I'm a freshout in hspice ,how can i design a simple op-amp or download one?

dongyea 6/1 2008/8/27 00:49
  rail to rail opamp
im a newby...i trying to do a sample and hold ADC using rail to rail opamp.i have finsih up the construction base on one of the sample i found in internet.but there were no calcullation in W/L ratio. ...

fusarium 6/2 2008/8/27 00:32
  BALUN Model
Hi How do I model a BalUn in PSpice or otherwise? TIA Madhukar

saigu 14/2 2008/8/27 00:55
  crystal oscilator phase response
I am designing an osillator with inverter and crystal combination. I want to check what is the phase shift. I agree it should be 360 degree or 0 degree. But I want the plot for verification. How can I...

netlgc 7/12 2008/8/27 00:53
  The voltages at Mosfet
For two series connected Nmos, i have apply a Vdd at M2. Please refer to attachment(voltage.jpg). I am intrested to know the current flow. How to make such calculation? Other know value is gate ...

spacebac 5/7 2008/8/27 01:22
  Leakage currents
What exactly is leakage current in a trasistor, what happens if the gateoxide thickness decreases?

rickli 4/12 2008/8/27 00:26
  can u help me pl..
Hi... when we r analysing a transistor biasing , how to analyse when the input given is in quasi-state condition??i.e when the input is 2.3 - 2.8 how the circuit takes it.. whether HIGH or LOW logic??...

wy830115 5/5 2008/8/27 00:27
  cmos current generator
Hi, I'm trying to construct a Iptat2 current generator, which is on the scheme. I've got a problem with getting my transistors T1 and T2 in the subtreshold region. They should work in subtreshold regi...

lassa 4/2 2008/8/26 23:57
  Basic question on output impedance
Hi, Can someone tell me why low output impedance can drive resistive load and high output impedance can only drive capacitive load? Is there any maths behind this? Anyone can suggest good reading m...

wy830115 4/5 2008/8/27 01:35
 Total Threads 13552  Thread Per Page 30 Page 1/452  |<  <<   1 2 3 4 5 6   >>  >| 
Power by DiY-Page 5.3.0 RLC