2012/4/22 gene heskett ghesk...@wdtv.com:
On Saturday, April 21, 2012 05:16:18 PM Jon Elson did opine:
Great. If it has the same part number, it SHOULD have the same pinout!
Any maker who does it differently should be shot. What a pain!
Yep, and I'll load the ammo.
Glad you got it figured
On 20 April 2012 23:20, Peter C. Wallace p...@mesanet.com wrote:
A dozen or so shorted I/O lines is unlikely to cause FPGA damage (ask
me how I know)
My 7i43 survived having _all_ the pins on one connector shorted to
GND. It's distressingly easy to do if you crimp the ribbon cable a bit
Greetings
From: andy pugh bodge...@gmail.com
A dozen or so shorted I/O lines is unlikely to cause FPGA damage (ask
me how I know)
My 7i43 survived having _all_ the pins on one connector shorted to
GND. It's distressingly easy to do if you crimp the ribbon cable a bit
wrong.
Apologies if it is
2012/4/21 Kirk Wallace kwall...@wallacecompany.com:
I'm just getting into the middle of this thread, but if I recall, the
last time we visited this circuit we found two sets of datasheets for
the same device with different pin outs. Maybe a multimeter could sort
out the pins.
Kirk, You have
On Saturday, April 21, 2012 10:02:54 AM Viesturs Lācis did opine:
2012/4/21 Kirk Wallace kwall...@wallacecompany.com:
I'm just getting into the middle of this thread, but if I recall, the
last time we visited this circuit we found two sets of datasheets for
the same device with different
Viesturs Lācis wrote:
I just resoldered the same transistor for the base-collector-emitter
pinout (collector in the middle, not base as I tried previously) and
tested and it works.
Great. If it has the same part number, it SHOULD have the same pinout!
Any maker who does it differently
gene heskett wrote:
But then which of the
other two are emitter and collector?
This can usually be done with a DVM with diode test. Connect the
meter between C and E, and then connect a resistor, like 22K Ohm
between base and the suspected collector. Note the meter reading.
If it is about
On Saturday, April 21, 2012 05:06:04 PM Jon Elson did opine:
gene heskett wrote:
But then which of the
other two are emitter and collector?
This can usually be done with a DVM with diode test. Connect the
meter between C and E, and then connect a resistor, like 22K Ohm
between base
On Saturday, April 21, 2012 05:16:18 PM Jon Elson did opine:
Viesturs Lؤپcis wrote:
I just resoldered the same transistor for the base-collector-emitter
pinout (collector in the middle, not base as I tried previously) and
tested and it works.
Great. If it has the same part number, it
Hello, gentlemen!
I would appreciate, if someone could advice, what is wrong with my diy
relay driver.
I built it according to this scheme:
http://www.cutting.lv/fileadmin/user_upload/bd140_scheme.gif
Relay is PE014005:
http://www.te.com/catalog/pn/en/1393219-3
The transistor is BD140-16
Measure the base voltage in the two states relative to +5
Dave Caroline
On Fri, Apr 20, 2012 at 4:18 PM, Viesturs Lācis
viesturs.la...@gmail.com wrote:
Hello, gentlemen!
I would appreciate, if someone could advice, what is wrong with my diy
relay driver.
I built it according to this scheme:
a common mistake is to assume collector is the middle pin like the npn
but its the base
Dave Caroline
--
For Developers, A Lot Can Happen In A Second.
Boundary is the first to Know...and Tell You.
Monitor Your
2012/4/20 Dave Caroline dave.thearchiv...@gmail.com:
Measure the base voltage in the two states relative to +5
It changes from +5,07 VDC to 0,60 VDC. +5 actually are +5,17, so it
means that base voltage swings from -0,1 to -4,57V, relative to +5V.
But it does not work, even if I connect the base
There is no way a base can go beyond around .6 volts if the transistor
is ok or it is connected correctly
shorting the base to ground will kill the transistor unless the psu is rubbish
Dave Caroline
--
For Developers, A
Ok, I have 3 more BD140s to play with, so will try again tomorrow.
Viesturs
2012. gada 20. Apr. 18:24 Dave Caroline dave.thearchiv...@gmail.com
rakstīja:
There is no way a base can go beyond around .6 volts if the transistor
is ok or it is connected correctly
shorting the base to ground will
On Friday, April 20, 2012 04:10:40 PM Viesturs Lācis did opine:
Hello, gentlemen!
I would appreciate, if someone could advice, what is wrong with my diy
relay driver.
I built it according to this scheme:
http://www.cutting.lv/fileadmin/user_upload/bd140_scheme.gif
Relay is PE014005:
On Friday, April 20, 2012 05:18:06 PM Dave Caroline did opine:
a common mistake is to assume collector is the middle pin like the npn
but its the base
Dave Caroline
This one, according to the data sheet, is conventional, with the collector
on the middle pin.
It may be safe to ground the left end of that 220 ohm resistor, but I'd be
tempted to use a 1k resistor as additional current limiting.
NONO this user has already killed a mesa card
Dave Caroline
--
For Developers,
On Friday, April 20, 2012 05:19:30 PM Viesturs Lācis did opine:
2012/4/20 Dave Caroline dave.thearchiv...@gmail.com:
Measure the base voltage in the two states relative to +5
It changes from +5,07 VDC to 0,60 VDC. +5 actually are +5,17, so it
means that base voltage swings from -0,1 to
On Fri, Apr 20, 2012 at 10:18 PM, gene heskett ghesk...@wdtv.com wrote:
On Friday, April 20, 2012 05:18:06 PM Dave Caroline did opine:
a common mistake is to assume collector is the middle pin like the npn
but its the base
Dave Caroline
This one, according to the data sheet, is
On Friday, April 20, 2012 05:32:42 PM Dave Caroline did opine:
It may be safe to ground the left end of that 220 ohm resistor, but
I'd be tempted to use a 1k resistor as additional current limiting.
NONO this user has already killed a mesa card
If a 1k resistor to ground can kill a Mesa
On Fri, Apr 20, 2012 at 10:36 PM, gene heskett ghesk...@wdtv.com wrote:
On Friday, April 20, 2012 05:32:42 PM Dave Caroline did opine:
It may be safe to ground the left end of that 220 ohm resistor, but
I'd be tempted to use a 1k resistor as additional current limiting.
NONO this user has
On Fri, 20 Apr 2012, gene heskett wrote:
Date: Fri, 20 Apr 2012 17:36:29 -0400
From: gene heskett ghesk...@wdtv.com
Reply-To: Enhanced Machine Controller (EMC)
emc-users@lists.sourceforge.net
To: emc-users@lists.sourceforge.net
Subject: Re: [Emc-users] Relay driver not working
On 04/20/2012 06:20 PM, Peter C. Wallace wrote:
A dozen or so shorted I/O lines is unlikely to cause FPGA damage (ask
me how I know)
I can imagine... 5 years from now someone is looking at a LinuxCNC
configuration using a MESA card and wonders Why is he using stepper
outputs 4, 5 and 6 for
On Fri, 2012-04-20 at 21:24 -0400, gene heskett wrote:
On Friday, April 20, 2012 09:19:33 PM gene heskett did opine:
On Friday, April 20, 2012 05:40:00 PM Dave Caroline did opine:
On Fri, Apr 20, 2012 at 10:18 PM, gene heskett ghesk...@wdtv.com
wrote:
On Friday, April 20, 2012
On Saturday, April 21, 2012 01:27:51 AM Kirk Wallace did opine:
On Fri, 2012-04-20 at 21:24 -0400, gene heskett wrote:
On Friday, April 20, 2012 09:19:33 PM gene heskett did opine:
On Friday, April 20, 2012 05:40:00 PM Dave Caroline did opine:
On Fri, Apr 20, 2012 at 10:18 PM, gene
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