Electronics Forum / Design / May 2005

I am looking for two new or used high quality OPT's for push-pull
EL84's (6BQ5's) for a pair of 10 -15 watt monoblocs I am planning to
build (the "Mullard 5-10" circuit.)  8,000 ohms plate to plate, UL
type preferred (43% screen taps), but others considered.

Well, we've been busy settling into our new digs, but I managed to
recover a movie we shot the first of the year, and a picture showing
the massive generator mounted to the MOEPED #3, the chain drive and
chain ring, the inverter (which is barely visible), and the 24 watts of

Ok so I have a wireless device the plugs into the wall with no option to
make it completely wireless (darn..guess I have to do it).
What I know is that the power supply outputs is DC 5V/2.5A, switching
type.  Also the tech specs say "Power Communication 4.5W (900mA x 5v)"

Here is my situation: I have this rather cheap car alarm system which I
am looking to install, basically just for the keyless entry. It has a
two wire output for the "keyless entry module" - the two wires produces
12v when disarmed, and reverses polarity when the alarm is armed.

Can someone tell me what is the difference between Instruction and data
memory

Sir,
I would like to know the working of a simple "Bootstrap sweep circuit"
& "Miller sweep circuit".
Nijil

I am designing a circuit to be powered by a J-cell (the 6V batteries
once popular with cameras, now used in medical devices - like this:
http://tinyurl.com/8ayw5 ). The cell will lay flat against a PCB, so I
need some kind of PCB-mounted spring contacts for the J-cell. I am

I am hoping someone can assist me with the SCCB (I2C?) bus of an
Omnivision OV7640 image sensor.
I am unable to get the OV7640 to respond to commands on the SCCB bus.
Preliminary :

I want to devalop a car driving game using a steering wheel.I want to
know behavior of steeing wheel signals to vehicle wheel.How i can
decide the vehicle wheel angle and speed from the steering wheel
position and torque signals.

I am trying to use Microcap V8 demo to export in pads format to produce
PCBs.
Unfortunately the components do not have packages specified.
Anyone know how to correct the problem?

I'm helping clean out an old house in Scituate, Massachusetts, along
the south coast. If anybody's interested, we have
One classic Hallicrafters SkyBuddy sw receiver
One Yaesu FT-101B ssb xcvr

I have total Newboid status so sorry if any of the following doesn't
make sense.
I am trying to wire a wooden wall with vibration sensors to detect
whereabouts a thrown ball hits it.

In the past I succesfully built HV transformers for a 2KV voltage
sourse. I drive the primary with a 20KHz sinwave. I used to use UU cores
 like those in flyback transformers. But now I am having great
difficulty getting those type of cores - a MAJOR stockist of Ferroxcube

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I want to implement a 6x6 keypad decoder in FPGA,i have got a reference
design for that, but the limitation with this reference design is that
it scans for only one key  pressed at a time.It dosen't have the
capabality of scanning for multiple keys at the same  time.