Need help reading schematic

Guest
I found a pretty neat design at
http://www.pskovinfo.ru/coilgun/indexe.htm and the circuit diagram is
on http://www.pskovinfo.ru/coilgun/vcircuit.gif

The descriptions can be found on other pages.

I decided I wanted to build it, and did a lot of research finding out
what the values are for certain components and finding equivalent
components on Newark, but he left out the description of the diode
KD510. As far as I can tell, the only place that diode KD510 is
mentioned, in all of the WWW, is on his webpage.

Then he forgot to describe the transformer on the DC/DC unit.

I'm not an EE, I'm only a tech and hobbyist, so maybe someone can help
me?

Jason
 
Oh, for those who are interested.

KD212 is equivalent to Newark part 33C1016
KC482A is equivalent to Newark part 16F6180
FR207 is equivalent to Newark part 26C2837
T122-25-12 is equivalent to Newark part 48F1271
D122-25-14 is equivalent to Newark part 26C2837

Jason
 
harvestdancer@hotmail.com wrote:
http://www.pskovinfo.ru/coilgun/vcircuit.gif
(snip) but he left out the description of the diode
KD510.
Click to expand...
Any signal diode should do. I suggest 1N4148.

--
John Popelish
 
On Tue, 11 Jan 2005 12:36:47 -0500, John Popelish <jpopelish@rica.net>
wrote:

Any signal diode should do. I suggest 1N4148.
Click to expand...
Why's that, John? Is it simply the fact that there are 18^120 of them
in existence?

--

"What is now proved was once only imagin'd." - William Blake, 1793.
 
<harvestdancer@hotmail.com> wrote in message
news:1105473176.701325.30550@f14g2000cwb.googlegroups.com...
................................
He describes the main transformer as "I use ferrit drossel (usually
from any small DC motors filter). This drossel has one-layer coil and
ferrit pipe core with two axial pin. I turned second one-layer coil.
The turns ratios per side are one to one."

The main inductor is described as "Main coil has 310-320 turns wire
diameter 2 x 0.6 mm (one 0.85mm or pair 0.6mm). I have many 0.6mm wire
and use pair instead of 0.85mm." It should be noted there's a hole
through the center of the main inductor coil.

The sensor coil is described as "Sensor has 3 layer wire diameter
0.1mm. Sensor has ferrit core diameter 2.5 mm length 10 mm."

The DC/DC Unit transformer is describes as "The transformer in the
DC/DC converter has ferrite caps core one inch diameter. First coil
has 10 turn of 0.6 mm wire and second coil has 400 turns of 1.5 mm
wire. Ferrite caps core has small non magnetic clearance (about
0.1mm)."

Now, I scanned Allied Electronics and Newark, and none of them describe
their transformers or inductors that way.

Jason

He is telling you how he made the transformer. You can't buy these things.
Click to expand...

Tam
 
On Tue, 11 Jan 2005 19:35:02 -0800, harvestdancer wrote:
Oh well, I'll build these, and then measure them, and then find
something at Newark with the same specs.
Click to expand...
Are you developing something for production? Because if I had built a
coil, and got it working, I'd call it a day, so to speak.

Thanks,
Rich
 
Rich Grise wrote:
On Tue, 11 Jan 2005 19:35:02 -0800, harvestdancer wrote:
Oh well, I'll build these, and then measure them, and then find
something at Newark with the same specs.

Are you developing something for production? Because if I had built a
coil, and got it working, I'd call it a day, so to speak.

Thanks,
Rich
Click to expand...
I have 5 family members who want one if I can get mine working. I have
no desire to wind that many coils.

Jason
 
John Popelish wrote:
harvestdancer@hotmail.com wrote:

Paul Burridge wrote:
On Tue, 11 Jan 2005 12:36:47 -0500, John Popelish
jpopelish@rica.net
wrote:

Any signal diode should do. I suggest 1N4148.

Why's that, John? Is it simply the fact that there are 18^120 of
them
in existence?

--

"What is now proved was once only imagin'd." - William Blake,
1793.

To be fair, since the designer said "KD510 any small impulse
diode".
So that suggestion should probably work. It's the coils that are
the
real bugger.

He describes the main transformer as "I use ferrit drossel (usually
from any small DC motors filter). This drossel has one-layer coil
and
ferrit pipe core with two axial pin. I turned second one-layer
coil.
The turns ratios per side are one to one."

The main inductor is described as "Main coil has 310-320 turns wire
diameter 2 x 0.6 mm (one 0.85mm or pair 0.6mm). I have many 0.6mm
wire
and use pair instead of 0.85mm." It should be noted there's a hole
through the center of the main inductor coil.

The sensor coil is described as "Sensor has 3 layer wire diameter
0.1mm. Sensor has ferrit core diameter 2.5 mm length 10 mm."

The DC/DC Unit transformer is describes as "The transformer in the
DC/DC converter has ferrite caps core one inch diameter. First
coil
has 10 turn of 0.6 mm wire and second coil has 400 turns of 1.5 mm
wire. Ferrite caps core has small non magnetic clearance (about
0.1mm)."

Now, I scanned Allied Electronics and Newark, and none of them
describe
their transformers or inductors that way.

The author is describing how you should manufacture the coils,
yourself.
Click to expand...
I was hoping to avoid that unless absolutely necessary. It seems to be
absolutely necessary if I want to build this.

Oh well, I'll build these, and then measure them, and then find
something at Newark with the same specs.

Jason
 
That coil you are trying to replicate is an experimental coil. You
ought to try altering it to get best performance for your cap and
projectile arrangement. Us it as a baseline then vary the windings as
necessary. This is no quick fix pill. This is scientific
experimentation.
 
That coil you are trying to replicate is an experimental coil. You
ought to try altering it to get best performance for your cap and
projectile arrangement. Us it as a baseline then vary the windings as
necessary. This is no quick fix pill. This is scientific
experimentation.
 
You must log in or register to reply here.

Welcome to EDABoard.com

Sponsor

Back
Top