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1. what is electronic design and interface?

Hi experts may anyone help me clarify what is the basic understanding of electronic design and interface its for very very basic students who just get to know engineering. May i say its all back to basics like electronics basics

Hi i'm using PADS software, does anyone knows how to do simulation on impedance control and high speed design in this software ?
3. Bridunity power factor rectifier

bridge rectifier calculations hi all, what is the general formula to find the value of L1 and C2 after the full wave bridge rectifier to get a smooth output DC voltage. Thanks all taring77
4. full wave bridge rectifier

hi all how do i calculate the power or power loss of a full wave Bridge rectifier? it does have a series inductor and a parallel capacitor after the rectifier..... Thanks Taring77
5. PCB design rule for MX27

freescale i mx27 pcb recommendation Hi all, i have MX27 chip, MAPBGA-404, intend to route on 8 layers board any recommendation on stuff like ...address and data to be on which layers? and layer stackup? Thanks
6. Programmable Message LED Light-UP Handheld Personal Fan

light up programmable message fan hi anyone knows how the Programmable Message LED Light-UP Handheld Personal Fan is done?
7. Basic Television circuitry

television circuitry Hi all, i've searched in the web regarding television. However there is no links or article that can help me understand how does the ciruitry of the television syatem work. Any one have some dummies for televeion circuit or more informative links? thanks Taring77
8. televison requirement

Hi all, any one knows the voltage requirement for audio and video part of a CRT television (any size will do) ? Thanks Taring77
9. Half Controlled rectifier circuit

half controlled rectifier Hi all, what can i expect the output waveform of the circuit be??? if i put in the following parameters AC source rms voltage E=208V input AC source frequency = 60Hz Ripple factor of HCBR is = 2% Vo=208V Ld=1.933mH Cd=7747.45uF Ci=274.9uF i'm not so sure if i...
10. High frequency PWM inverter waveform

Hi all i have a circuit of High frequency PWM inverter attach, anyone know what should i expect the waveform to be? with Vin to be 200volts Thanks taring77
11. What is the range considered as high speed PCB?

Hi all, what is the range considered as high speed PCB? what does frequency ranges in PCB means?
12. 8 Layer Board MCU problem

Hi all i have a 8 layer board problem. its an mcu board with tis chip IC, MCU, MC9328MX21 -MAPBGA-17x17-289pins frm freescale, a couple of DRAM, Flash, Lan chip etc. When i change the address n data to different layer its not werking well. there is no movement in components. Any one can...

14. Need some PSIM samples

Hi all i have a circuit to simulate in PSIM but output seems not to be correct anyone have a sample for half bridge rectifier and also Fixed high frequency PWM inverter Eventually it will merger to a switch mode power supply circuit Thanks
15. PSIM simulation for Half controlled bridge rectifier

rectifier psim Hi all i have a circuit to simulate in PSIM but output seems not to be correct anyone have a sample for half bridge rectifier and also Fixed high frequency PWM inverter Eventually it will merger to a switch mode power supply circuit Thanks
16. comparing 2 .xls files

Hi all, i'm using open office for my databases. I have 1 main databases and will normally come out a smaller data bases on more often occasion. How do i check these small data bases to the main databases for spelling errors and perhaps do some insertion n stuff..please help i'm using...
17. how to encrypt the PCB software dongle into PC

Hi all, i'm using a dongle for my PCB software. Is there anyway that i can encrypt the software in my PC n no longer need to use dongle? Coz if i forget to bring my dongle to work i can no longer do any routing. Thanks
18. unstable high speed board

hyperlynx si megaupload Hi all, i would seek advise on routing of high speed board. My board have 8 layers one MCU --MC9328MX21VM, MAPBGA-289.. 2 SDRAM and 1 flash..plus other components After changing a flash component on my board, it seems that the whole board is unstable. My...