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| Title | Author | Views/Replies | Posted at |
 chopper A need help urgentI need help to finish this project. I used 2 IC555 as Astable and Monostable to trigger the MOSFET IRF620 n channel, I can also change the frequency and duty cycle. I got two problems. 1/. The outp... |
scuzt | 7/12 | 2008/8/29 20:26 |
| COM port expander Hi Iand you see web: http://www.tanthanhdat.com/?action=content&show=article&cid=5&id=8 |
fujun2013 | 4/1 | 2008/8/29 20:23 |
| Can someone make a PCB for me ... USA, Virginia I am in Virginia and a forum member (onlaag) has helped me with a small motor control project. I can draw up a good PCB layout but I CAN NOT BUY the materials. I have already driven 100 miles to two... |
mxg330 | 5/4 | 2008/8/29 20:13 |
| 10 MHz cystal oscillator Dear all, does anyone know the schematic of 10 MHz crystal oscillator or where i can find it? Thanks for your help |
398338 | 4/3 | 2008/8/29 20:17 |
| best way to do this? When I unarm my car alarm system, I want my windows to roll down. I got the windows-roll down circuit all figured out and it requires a momentary logic 0. So how should I hook up my windows circui... |
zunwang | 8/3 | 2008/8/29 20:29 |
| Pulse counter Need a kind diferent pulse counter. It may have a PIC or an AVR or even discrete CMOS/TTL ics. It must have two lines with 4 digits each line, one for total counting and other with sub total. Each lin... |
zunwang | 6/3 | 2008/8/29 20:30 |
| Difference SA602 / SA612 What's the difference between Philips SA602 and SA612. They are 100% compatible in RF applications like mixers, oscilators and so on? Regards, Fernando |
yvling | 6/1 | 2008/8/29 20:10 |
| digital fiber optic communication I am involved in a project ,that I should connect multiple nodes to a master dsp processor to communicate data between them in a very harsh noisy environment (A brushed DC motor with 200V 1000A), f... |
yutcxa | 3/1 | 2008/8/29 19:59 |
| 5 phase stepping motor Hi! I have 2 C4262-9015 vexta stepping motor.These are 5-phase , 33ohm and .35A .Can anybody explain its inner structure and its driver circuits. I will be very thankful for any kind of help Bye, ... |
edu | 12/4 | 2008/8/29 20:26 |
| How to read/write Siemens SDE(a)2506 WithIC-Prog or Ponyprog Hi all How to read/write Siemens SDE(a)2506EEPROM With IC-Prog or Ponyprog Propic2 Programmer or JDM Programmer I Unsuccesful Can you help me? |
lassa | 26/7 | 2008/8/29 20:35 |
| need usbscope50 tiny usb oscilloscope schematic usbscope50 is very tiny usb scope,i also want to made a home scope,anyone can send me usbscope50 schematic. Added after 5 hours 14 minutes: |
fusarium | 41/7 | 2008/8/29 19:59 |
| Need help on buiding a DC motor hi... I wanted to build a DC motor for RC cars...... so can anyone recommend some information on building a DC motor? Thanks |
398338 | 4/10 | 2008/8/29 20:26 |
| Seiko KS-92F1016 LCD Problem Dear All, I bought an old lcd from my best dealer but i can not make it work. He gave me only pinouts and i searched web, many times and found this datasheet : Seiko KS-92F1016 : http://rapid... |
netlgc | 4/1 | 2008/8/29 20:19 |
| TMR0 PIC18F458 question I use PIC18F458 with 20MHZ clock. I set TMR0L = 00 and I wait = FF. I increment it with clock (I think internal /4) and 1/256(prescale). What is it the time duration between 00 to FF ? Thanks |
mxg330 | 7/4 | 2008/8/29 20:30 |
| Synchronization for a rolling code scrambler, how to synchronize the scrambler and the descrambler? is there an easy way? regards |
pdang | 5/2 | 2008/8/29 20:21 |
| LM13700 based wattmeter I have to build a wattmeter as my final exam project on high technical school.I tried to simulate it in TINA but somehow i couldnt work it out.Also the description of LM13700 in TINA is not complete .... |
dongyea | 7/2 | 2008/8/29 19:58 |
| dsp@@ DSP E-BOOK |
btcdtc | 4/3 | 2008/8/29 20:14 |
| optical cables info? pls HI, anyone here got link/idea as to how to "Decode" ? right term?? for those optical cables found in high-end products..... how do you get sound for LEft/Right , etc.. audio.. -Raff |
ai8957382 | 4/1 | 2008/8/29 20:10 |
| A very cool sinewave inverter schematics A very cool sinewave inverter schematics: |
hgping | 6/2 | 2008/8/29 20:29 |
| Question about USB to Parallel port Now I search for USB to Parallel port convert. I just found FR245 from FTDI but it look like USB to Parallel for microcontroller. Does anyone knows the detail about this equiment? |
yvling | 6/2 | 2008/8/29 20:06 |
| sega dreamcast troubleshooting It only powers on for about a sec. then it turns off. If you attempt to turn it back on after it turns off, it will not turn on. Its like it has a self reseting circuit breaker or somethhing. |
lassa | 15/5 | 2008/8/29 20:27 |
| orcad pspice models for adc0804 and dac0804 are models I can use in orcad capture? at site national.com I did not find them. |
lassa | 18/2 | 2008/8/29 20:33 |
| FSK demodulator using xr2211 i found this circuit for fsk demodulation mark =1200hz space = 2200 hz can anyone help? |
ai8957382 | 7/2 | 2008/8/29 20:24 |
| 90,9MHz reject band filter Need to build a reject band filter centered in 90,9MHz with 75 ohm input/output impedance. This is be used before a wide band amplifier so is the local FM broadcasting frequency and don磘 want to boos... |
fujun2013 | 8/2 | 2008/8/29 20:20 |
| InfraRed source for night shotting cameras (SONY) Hi, Any one have idea of home made IR-LED source that can be used with handy cams that support night IR shotting. Thx Sadat |
netlgc | 10/4 | 2008/8/29 20:33 |
| very low power and small size FM transmitter for digi.data I want to send signals from my robots to the other robots and mains station so i need many transmitters and reciever, I cannot use 433Mhz module as they are costly. can any one suggest me some sch... |
hgping | 5/3 | 2008/8/29 20:15 |
| PIC16F877 SHT11 TEMP MONITOR (Heat,Humidity,dev point, Clk PIC16F877 meteorologic monitor (Heat,Humidity,dev point, Clock, Calendar,Alarm) |
btcdtc | 6/1 | 2008/8/29 20:06 |
| how to make a wide range clock generator? can anyone help me to generate a low jitter clock from 1Mhz to 400Mhz? or give me some suggestion.....thanks a lot! |
booksir | 9/1 | 2008/8/29 20:18 |
| Help plz for car MP3 hi, i have purchased a car mp3 player with fm transmitter (china made). it works fine for some days. but now not working, neithor with PC (to add more songs) nor playing songs. only lcd back light is... |
addxjyx | 18/5 | 2008/8/29 19:57 |
| Search project frequency meter on CPLD regard I search for project a frequency meter on CPLD who has link on this? thank you |
addxjyx | 7/1 | 2008/8/29 20:10 |
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