Light Controller

[HighFlight]

I have a board 4.5" x 6.5" with common +, switched - controller that I can't
make heads or tails over. It is intended for a 12v vehicle. It hasn't
worked since I bought the darn thing and I really am tired of using
flashlights. It is designed to control 6 light circuits.

The components are as follows:
LM2930T-5 voltage reg with a 220uf cap on + output
- There is also a diode between the + output and the + input and a 22uf
cap between - input and + input???
(6) Momentary switches
(6) Indicator LEDs attached to MOSFET drain through 3Kohm resistors
(Or-Bl-R-G)
(3) CD40138CN dual J/K flip flops
(6) F15N05L MOSFETs fed from J/Ks through 10ohm resistors (Br-Bl-Bl-G)
- Source is ground and each drain goes out through a fuse to the lights

This knowledge comes from internet research on part numbers. I have
soldering experience, but not the background needed.

Does someone possibly have a sketch of a circuit similar to this one that I
could use to rebuild this. Also, suggestions to simplify it are welcome;
for example using an on-off switch with X circuit.

Thanks very much for any assistance. I'm at wits end with this thing.

Jon

 

[James Sweet]

"HighFlight" <highflight2k2@yahoo.com> wrote in message
news:c_WdnXZgdPe0lAKiRVn-iw@comcast.com...

I have a board 4.5" x 6.5" with common +, switched - controller that I
can't
make heads or tails over. It is intended for a 12v vehicle. It hasn't
worked since I bought the darn thing and I really am tired of using
flashlights. It is designed to control 6 light circuits.

What's it designed to do?

 

[HighFlight]

It's simply an on/off control for 6 12v lights, but with momentary switches.
I think the manufacturer was trying to be "cute" with their implementation
by using the momentary switches and LED indicators...who knows. I do think
it's cool and would like to replicate it if possible.

In a 12v automotive (it's actually a boat) situation, and in such a small
form factor (it's only 1" tall), are there on-off switches that could just
be wired in straight? I just don't know about the current.

Here are some pictures of it...

http://www.malenfant.us/shorething/lights

Thanks again for any help.

Jon

"James Sweet" <jamessweet@hotmail.com> wrote in message
news:OQFnb.53816$e01.141590@attbi_s02...

"HighFlight" <highflight2k2@yahoo.com> wrote in message
news:c_WdnXZgdPe0lAKiRVn-iw@comcast.com...
I have a board 4.5" x 6.5" with common +, switched - controller that I
can't
make heads or tails over. It is intended for a 12v vehicle. It hasn't
worked since I bought the darn thing and I really am tired of using
flashlights. It is designed to control 6 light circuits.


What's it designed to do?

 

[James Sweet]

"HighFlight" <highflight2k2@yahoo.com> wrote in message
news:zKydnbpJB9toNQKiRVn-jw@comcast.com...

It's simply an on/off control for 6 12v lights, but with momentary
switches.
I think the manufacturer was trying to be "cute" with their implementation
by using the momentary switches and LED indicators...who knows. I do
think
it's cool and would like to replicate it if possible.

In a 12v automotive (it's actually a boat) situation, and in such a small
form factor (it's only 1" tall), are there on-off switches that could just
be wired in straight? I just don't know about the current.

Here are some pictures of it...

http://www.malenfant.us/shorething/lights

Thanks again for any help.

Jon

Ok that looks pretty simple actually, the trick here is to look up the data
for the individual parts and follow how it's wired. That looks like a
voltage regulator down in the lower left corner, I can't read the numbers
but is it a 7805? If so the pin on the bottom is the input, the middle is
ground, and the one on top is the output. Follow those traces to the
connector and put 12v to them. Those 6 parts rivited down are probably
MOSFET's, what's the number on them? You could go to www.nteinc.com and do a
crossreference search then bring up the datasheet to see the pinout for
them, but if you just look at the traces there's probably a common trace
that goes to the same pin on all of them and then connects to either power
or ground depending which side it switches, and then a second pin will go to
a pad on the connector and the third will connect to one of the logic chips
which forms the latching logic. If all else fails you could mail me the
thing and I'll figure it out for you but it shouldn't be too hard to get.