[Electronic Eavesdropping Devices Detector]

Hi AG,

Yeah, like I said

[need some inputs!!]

There could be a number of reasons for this! Have you got any pulses (on a scope) from U8:A clock? Also on pin 6 of U3:B input (from IC1)?

[Batteries In A Series]

Why burn away lots of energy from the poor batterys with a zener and a resistor, a terrible waste! Why not use a regulator and perhaps parallel some of the batterys for better efficiency?  ???

[Electronic Eavesdropping Devices Detector]

Here is a simple Bug Finder 20 MHz to 1GHz. The scanned article is from an old German magazine but I

Bug_Finder.pdf

[Why is so hard to mimic the Knight Rider scanner Effect?]

We are not talking about the same things here, my practical experiences do not agree with your statements. You are also continuing to referee to certain commercial equipment with no relevance to what I have stated.                        I will not waste more time on this!

[AT PC power supply only putting out 10V between 12+ and GND]

Hi ben,

There are many types of PSU

[Problem in an H-Bridge]

I believe some zeners to protect the MOSFETS wouldn

[Led display digital voltmeter kit?]

Hi linker,

If you like to build a meter yourself this is a nice kit but it

[Why is so hard to mimic the Knight Rider scanner Effect?]

At least you got the last part right and this high current pulses is exactly what

[Why is so hard to mimic the Knight Rider scanner Effect?]

Yes I know very well how a halogen works, thank you! This was not the point here; the point was the limited lifespan a halogen has in the suggested application. Unlike the police light (in the link you provided) the filaments in the knight rider application will have more time to

[Why is so hard to mimic the Knight Rider scanner Effect?]

Halogens are not suitable for blinking/flashing due to their very low cold resistance which will limit the lifespan considerably!

[Inverter]

This one is much better:
http://www3.telus.net/chemelec/Projects/Inverter/Mosfet-Inverter.htm

[16V 3.5A from 12V battery (17Ah)]

Yes, a filter should take care of this problem.

[I need square wave generator]

Why not our old friend the 555?

[BBC Micro User Port pinout]

Try

[Laying out a strip board]

[Laying out a strip board]

That

[12VDC to 24VAC 4 A]

I don't think that this sound stupid.
It needs AC because is the principle of his work.

Yes of curse it needs AC but in a vehicle where you have DC it would be smarter to use a DC motor.

[Crocodile Physics+Technology Bassbox Pro v6]

Najzz! thankz! ;)

[StepUp dcdc smps (car amp)]

This is a program file, an (exe file)!?

[12VDC to 24VAC 4 A]

Why would someone manufacture equipment for campers and alike for AC Voltage?
That sounds stupid.

[12v power supply?]

Yes a good chance! Is this what you need?

[12v power supply?]

You don

[Variable Pc PowerSupply (modification)]

Hi gevv,

Interesting, however not enough info to make sense and very confusing diagrams! Too Bad!  :(

[12v power supply?]

Hi,
Find yourself a +- 220v/12v transformer capable of handling 200ma, a 1a bridge rectifier, and a 1000mfd 25v electrolytic capasitor and a piece of veroboard. Over a switch and a fuse take the 220v to the transformer with the rectifier in serie and the cap in parrallel you should get a bit more than 12v to power your LED's. But I must warn you The mains supply of 220 volt is very lethal. If you know nothing about power electronics leave it alone and rather go and buy yourself a comercial power supply that is capable of handling the power of LED's. The current of smal led's is a couple of mA and bigger ones do not need a lot more. Enjoy!

This solution will supply about 17V at low load! This could damage LED