Electronics Forum / Electronics / April 2004

picked it up at a swapmeat for $5 now need to find out how to drive it any info or links please

My mums 5400Z reciever stopped working, I replaced a few caps in the power
supply that was shown in an artical in a satellite mag, this didn't fix it.
I tried another power supply from a working unit and it still didn't get it
going.

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I am looking at purchasing a wireless CMOS camera from ebay and was
wondering at what frequency within the 2.4Ghz spectrum these run at? What
about the 802.11b wireless gear, I have a wireless network running 802.11b,
what frequency is this type of gear at?

Hello every one,
I seek for a complete schematic of a "Kenwood KRC452L".
I tried theses websites, but I found nothing:
http://membres.lycos.fr/shematheque/

does anyone here have a circuit for the Marshall 8008 Valvestate amp or is
able to tell me the values of R8 and C12 as both are fried. Apart from these
2 components the amp looks great.
Thanks in advance

This is a Voltage and Current Regulated Supply with the ability to go
to down to Zero Volts. It is not super Quality, but Definately good
for Beginners or anyone wanting a Simple Design.
So, If interested in a Reasonably Good, but Simple Power Supply

I have made a board with a PIC16F628:
Pin 5: Gnd
Pin 14: +5V
Capacitor between pin 5 and 14.

I'm having problems with this annoyingly simple P-Chan FET circuit ....
http://users.pandora.be/colin.watters/new_timer/polarity_protect.jpg
With the correct input voltage it seems to work fine, but when the input
polarity is reversed the FET doesn't turn off for some reason.

I have recently designed a 4-speaker driver circuit using a simple NPN
darlington (TIP120).
Each speaker is driven individually by a TIP120 and is connected with
one terminal on 24Vdc and the second terminal to the collector of the

I'm in the market for a 76cm widescreen CRT television.
There are so many on the market and it so confusing.
Am told the Panasonic is good.
But what do people reckon is a good value?

Electronic electricity repository is an energy concept that aims to accumulate
and store electrical energy from any source.  The storage would be intended to
accommodate such things as electric vehicles, home heating, etc.  The best
example is the EV - an electric car that would run ...

I' ve seen in a lot of forums that we can use laptop screens as
monitor "simply" buying an image processor (if that monitor hasn't it)
and connecting it with the vga and the screen.
That image processors aren't cheap.

**  This is to that idiot  "klo".
 BTW   " Mondotronic " is some backyard operation in Melbourne.
...........   Phil

Is there anyone who van provide me with the schematics of a pool ioniser?
Thanks in advance.
Dirk