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either it's wrong, or it relies on threshold Vgs on the MOSFET being very close to 9VA doorbell when access to push button wires not practical and placed
where primary doorbell can't be heard.
bottom of page at:
https://sites.google.com/site/thetalkingfly/home
jpg file.
After finally tracking down the image, I notice it still has wires, andA doorbell when access to push button wires not practical and placed
where primary doorbell can't be heard.
bottom of page at:
https://sites.google.com/site/thetalkingfly/home
jpg file.
I meant the discontuniued PNPOn Jul 11, 5:36Â am, Jasen Betts <ja...@xnet.co.nz> wrote:
On 2011-07-10, Simon Roberts <2ass...@gmail.com> wrote:
A doorbell when access to push button wires not practical and placed
where primary doorbell can't be heard.
bottom of page at:
https://sites.google.com/site/thetalkingfly/home
jpg file.
either it's wrong, or it relies on threshold Vgs on the MOSFET being very close to 9V
also made of unobtanium.
Vgs = -2V
http://skory.z-net.hu/alkatresz/IRF9510.pdf
the common collector layout would ensure that, but it also puts theand the base of the bjt draws only the current it needs.
hooked up to existing doorbell or dooerbells transformer.Simon Roberts wrote:
A doorbell when access to push button wires not practical and placed
where primary doorbell can't be heard.
bottom of page at:
https://sites.google.com/site/thetalkingfly/home
jpg file.
After finally tracking down the image, I notice it still has wires, and
no mention of remote access or anything.
Why didn't you give a direct link to the jpg, suitably scaled, rather
than that incomprehensible treatise?
Why not just go ahead and spring for a wireless doorbell? You should be able
to pick one up for a couple of decabucks at the local home handyman store..
Good Luck!
Rich
A doorbell when access to push button wires not practical and placed
where primary doorbell can't be heard.
IT works, and has been for at least 1 year. (but nobody comes to myA doorbell when access to push button wires not practical and placed
where primary doorbell can't be heard.
bottom of page at:
https://sites.google.com/site/thetalkingfly/home
jpg file.
I'm sure the circuit can be redesigned using a npn bjt and n channelA doorbell when access to push button wires not practical and placed
where primary doorbell can't be heard.
bottom of page at:
https://sites.google.com/site/thetalkingfly/home
jpg file.
WHy do anything when it's so convenient to pay someone to do it forSimon Roberts wrote:
A doorbell when access to push button wires not practical and placed
where primary doorbell can't be heard.
bottom of page at:
https://sites.google.com/site/thetalkingfly/home
jpg file.
After finally tracking down the image, I notice it still has wires, and
no mention of remote access or anything.
Why didn't you give a direct link to the jpg, suitably scaled, rather
than that incomprehensible treatise?
Why not just go ahead and spring for a wireless doorbell? You should be able
to pick one up for a couple of decabucks at the local home handyman store..
Good Luck!
Rich
Maybe, but if Vgs<~-2V the MOSFET is "on". I might have the sourceOn 2011-07-12, Simon Roberts <2ass...@gmail.com> wrote:
On Jul 11, 5:36Â am, Jasen Betts <ja...@xnet.co.nz> wrote:
On 2011-07-10, Simon Roberts <2ass...@gmail.com> wrote:
A doorbell when access to push button wires not practical and placed
where primary doorbell can't be heard.
bottom of page at:
https://sites.google.com/site/thetalkingfly/home
jpg file.
either it's wrong, or it relies on threshold Vgs on the MOSFET being very close to 9V
also made of unobtanium.
Vgs = -2V
http://skory.z-net.hu/alkatresz/IRF9510.pdf
I meant the discontuniued PNP
are you sure that's not an MPM ?
and the base of the bjt draws only the current it needs.
the common collector layout would ensure that, but it also puts the
emitter at 0 to 1V whch wont't switch the mosfet with that circuit
there's something wrong with the drawing. Â possibly you've got the
MOSFET in the wong place?
--
ââ 100% natural- Hide quoted text -
- Show quoted text -
No, there is nothing wrong. I wish I could direct you to the specs ofOn 2011-07-12, Simon Roberts <2ass...@gmail.com> wrote:
On Jul 11, 5:36Â am, Jasen Betts <ja...@xnet.co.nz> wrote:
On 2011-07-10, Simon Roberts <2ass...@gmail.com> wrote:
A doorbell when access to push button wires not practical and placed
where primary doorbell can't be heard.
bottom of page at:
https://sites.google.com/site/thetalkingfly/home
jpg file.
either it's wrong, or it relies on threshold Vgs on the MOSFET being very close to 9V
also made of unobtanium.
Vgs = -2V
http://skory.z-net.hu/alkatresz/IRF9510.pdf
I meant the discontuniued PNP
are you sure that's not an MPM ?
and the base of the bjt draws only the current it needs.
the common collector layout would ensure that, but it also puts the
emitter at 0 to 1V whch wont't switch the mosfet with that circuit
there's something wrong with the drawing. Â possibly you've got the
MOSFET in the wong place?
--
ââ 100% natural- Hide quoted text -
- Show quoted text -
As for the pnp transistor I don't know if it's a bjt or not; can'tOn Jul 12, 8:07Â am, Jasen Betts <ja...@xnet.co.nz> wrote:
On 2011-07-12, Simon Roberts <2ass...@gmail.com> wrote:
On Jul 11, 5:36Â am, Jasen Betts <ja...@xnet.co.nz> wrote:
On 2011-07-10, Simon Roberts <2ass...@gmail.com> wrote:
A doorbell when access to push button wires not practical and placed
where primary doorbell can't be heard.
bottom of page at:
https://sites.google.com/site/thetalkingfly/home
jpg file.
either it's wrong, or it relies on threshold Vgs on the MOSFET being very close to 9V
also made of unobtanium.
Vgs = -2V
http://skory.z-net.hu/alkatresz/IRF9510.pdf
I meant the discontuniued PNP
are you sure that's not an MPM ?
and the base of the bjt draws only the current it needs.
the common collector layout would ensure that, but it also puts the
emitter at 0 to 1V whch wont't switch the mosfet with that circuit
there's something wrong with the drawing. Â possibly you've got the
MOSFET in the wong place?
--
ââ 100% natural- Hide quoted text -
- Show quoted text -
No, there is nothing wrong. Â I wish I could direct you to the specs of
IRF9510.
Please try:
http://www.datasheetcatalog.com/datasheets_pdf/I/R/F/9/IRF9510.shtml- Hide quoted text -
- Show quoted text -
May be I should put a resistor in series with existing resitor andOn Jul 12, 8:07Â am, Jasen Betts <ja...@xnet.co.nz> wrote:
On 2011-07-12, Simon Roberts <2ass...@gmail.com> wrote:
On Jul 11, 5:36Â am, Jasen Betts <ja...@xnet.co.nz> wrote:
On 2011-07-10, Simon Roberts <2ass...@gmail.com> wrote:
A doorbell when access to push button wires not practical and placed
where primary doorbell can't be heard.
bottom of page at:
https://sites.google.com/site/thetalkingfly/home
jpg file.
either it's wrong, or it relies on threshold Vgs on the MOSFET being very close to 9V
also made of unobtanium.
Vgs = -2V
http://skory.z-net.hu/alkatresz/IRF9510.pdf
I meant the discontuniued PNP
are you sure that's not an MPM ?
and the base of the bjt draws only the current it needs.
the common collector layout would ensure that, but it also puts the
emitter at 0 to 1V whch wont't switch the mosfet with that circuit
there's something wrong with the drawing. Â possibly you've got the
MOSFET in the wong place?
--
ââ 100% natural- Hide quoted text -
- Show quoted text -
No, there is nothing wrong. Â I wish I could direct you to the specs of
IRF9510.
Please try:
http://www.datasheetcatalog.com/datasheets_pdf/I/R/F/9/IRF9510.shtml- Hide quoted text -
- Show quoted text -
It (capacitor) doesn't have enogh series resistance (in the vicinityOn Jul 12, 9:31Â am, Simon Roberts <2ass...@gmail.com> wrote:
On Jul 12, 8:07Â am, Jasen Betts <ja...@xnet.co.nz> wrote:
On 2011-07-12, Simon Roberts <2ass...@gmail.com> wrote:
On Jul 11, 5:36Â am, Jasen Betts <ja...@xnet.co.nz> wrote:
On 2011-07-10, Simon Roberts <2ass...@gmail.com> wrote:
A doorbell when access to push button wires not practical and placed
where primary doorbell can't be heard.
bottom of page at:
https://sites.google.com/site/thetalkingfly/home
jpg file.
either it's wrong, or it relies on threshold Vgs on the MOSFET being very close to 9V
also made of unobtanium.
Vgs = -2V
http://skory.z-net.hu/alkatresz/IRF9510.pdf
I meant the discontuniued PNP
are you sure that's not an MPM ?
and the base of the bjt draws only the current it needs.
the common collector layout would ensure that, but it also puts the
emitter at 0 to 1V whch wont't switch the mosfet with that circuit
there's something wrong with the drawing. Â possibly you've got the
MOSFET in the wong place?
--
ââ 100% natural- Hide quoted text -
- Show quoted text -
No, there is nothing wrong. Â I wish I could direct you to the specs of
IRF9510.
Please try:
http://www.datasheetcatalog.com/datasheets_pdf/I/R/F/9/IRF9510.shtml-Hide quoted text -
- Show quoted text -
May be I should put a resistor in series with existing resitor and
capacitor (that are in parallel) to avoid to much current in the
collector of the small transistor. Â This may be the only flaw. But I
think most electrolytics have some resistance (not sure how much this
one has)- Hide quoted text -
- Show quoted text -
Maybe I should get a Chinaman to mass produce it, market it, andOn Jul 11, 3:13 pm, Rich Grise <ri...@example.net.invalid> wrote:
Simon Roberts wrote:
A doorbell when access to push button wires not practical and placed
where primary doorbell can't be heard.
bottom of page at:
https://sites.google.com/site/thetalkingfly/home
jpg file.
After finally tracking down the image, I notice it still has wires, and
no mention of remote access or anything.
Why didn't you give a direct link to the jpg, suitably scaled, rather
than that incomprehensible treatise?
Why not just go ahead and spring for a wireless doorbell? You should be able
to pick one up for a couple of decabucks at the local home handyman store.
Good Luck!
Rich
WHy do anything when it's so convenient to pay someone to do it for
you? I pay a guy to have sex with my girlfriend because I can't be
bothered.
Good Luck,
Simon- Hide quoted text -
- Show quoted text -
"
And just for the record I have nothing against the Chinese orOn Jul 12, 8:18 am, Simon Roberts <2ass...@gmail.com> wrote:
On Jul 11, 3:13 pm, Rich Grise <ri...@example.net.invalid> wrote:
Simon Roberts wrote:
A doorbell when access to push button wires not practical and placed
where primary doorbell can't be heard.
bottom of page at:
https://sites.google.com/site/thetalkingfly/home
jpg file.
After finally tracking down the image, I notice it still has wires, and
no mention of remote access or anything.
Why didn't you give a direct link to the jpg, suitably scaled, rather
than that incomprehensible treatise?
Why not just go ahead and spring for a wireless doorbell? You should be able
to pick one up for a couple of decabucks at the local home handyman store.
Good Luck!
Rich
WHy do anything when it's so convenient to pay someone to do it for
you? I pay a guy to have sex with my girlfriend because I can't be
bothered.
Good Luck,
Simon- Hide quoted text -
- Show quoted text -
"
Maybe I should get a Chinaman to mass produce it, market it, and
distribute to my "local" handyman store so that you could spend $10 or
$20 to buy it.- Hide quoted text -
- Show quoted text -
Don't worry, you're just the straw that broke the camel's back. OneOn Jul 12, 10:48 am, Simon Roberts <2ass...@gmail.com> wrote:
On Jul 12, 8:18 am, Simon Roberts <2ass...@gmail.com> wrote:
On Jul 11, 3:13 pm, Rich Grise <ri...@example.net.invalid> wrote:
Simon Roberts wrote:
A doorbell when access to push button wires not practical and placed
where primary doorbell can't be heard.
bottom of page at:
https://sites.google.com/site/thetalkingfly/home
jpg file.
After finally tracking down the image, I notice it still has wires, and
no mention of remote access or anything.
Why didn't you give a direct link to the jpg, suitably scaled, rather
than that incomprehensible treatise?
Why not just go ahead and spring for a wireless doorbell? You should be able
to pick one up for a couple of decabucks at the local home handyman store.
Good Luck!
Rich
WHy do anything when it's so convenient to pay someone to do it for
you? I pay a guy to have sex with my girlfriend because I can't be
bothered.
Good Luck,
Simon- Hide quoted text -
- Show quoted text -
"
Maybe I should get a Chinaman to mass produce it, market it, and
distribute to my "local" handyman store so that you could spend $10 or
$20 to buy it.- Hide quoted text -
- Show quoted text -
And just for the record I have nothing against the Chinese or
capatilism but why do you even bother to visit? For that matter why
do I?- Hide quoted text -
- Show quoted text -
Now you're just trolling.On Jul 12, 8:18 am, Simon Roberts <2ass...@gmail.com> wrote:
On Jul 11, 3:13 pm, Rich Grise <ri...@example.net.invalid> wrote:
Simon Roberts wrote:
A doorbell when access to push button wires not practical and placed
where primary doorbell can't be heard.
bottom of page at:
https://sites.google.com/site/thetalkingfly/home
jpg file.
After finally tracking down the image, I notice it still has wires, and
no mention of remote access or anything.
Why didn't you give a direct link to the jpg, suitably scaled, rather
than that incomprehensible treatise?
Why not just go ahead and spring for a wireless doorbell? You should be
able to pick one up for a couple of decabucks at the local home
handyman store.
Good Luck!
Rich
WHy do anything when it's so convenient to pay someone to do it for
you? I pay a guy to have sex with my girlfriend because I can't be
bothered.
Good Luck,
Simon- Hide quoted text -
- Show quoted text -
"
Maybe I should get a Chinaman to mass produce it, market it, and
distribute to my "local" handyman store so that you could spend $10 or
$20 to buy it.
are you sure that's not an MPM ?