Home |
Search |
Today's Posts |
![]() |
|
Electronic Schematics (alt.binaries.schematics.electronic) A place to show and share your electronics schematic drawings. |
Reply |
|
LinkBack | Thread Tools | Display Modes |
#11
![]() |
|||
|
|||
![]()
Jim Thompson wrote:
On Thu, 12 May 2016 15:09:45 -0400, Phil Hobbs wrote: How about writing that book I've been bugging you about? I ponder that, but I'm not sure I'd be good at writing... circuit design is so easy for me I'm not sure I can explain how I do it ;-) You have a granddaughter with that circuit lab kit. Eventually you will explain things. Just think about how you will do that. Or occupy your time by riding a bike over the Himalayas like Pease did. |
#12
![]() |
|||
|
|||
![]()
On Fri, 13 May 2016 09:11:16 -0400, "Tom Del Rosso"
wrote: Jim Thompson wrote: On Thu, 12 May 2016 15:09:45 -0400, Phil Hobbs wrote: How about writing that book I've been bugging you about? I ponder that, but I'm not sure I'd be good at writing... circuit design is so easy for me I'm not sure I can explain how I do it ;-) You have a granddaughter with that circuit lab kit. Eventually you will explain things. Just think about how you will do that. Or occupy your time by riding a bike over the Himalayas like Pease did. Grand_son_... 8 years old... the same one who's on the All Star Inline Hockey Team and was just awarded a trophy for best defensive player of the whole league ;-) ...Jim Thompson -- | James E.Thompson | mens | | Analog Innovations | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | San Tan Valley, AZ 85142 Skype: Contacts Only | | | Voice ![]() | E-mail Icon at http://www.analog-innovations.com | 1962 | The touchstone of liberalism is intolerance |
#13
![]() |
|||
|
|||
![]()
Jim Thompson wrote:
On Fri, 13 May 2016 09:11:16 -0400, "Tom Del Rosso" wrote: Jim Thompson wrote: On Thu, 12 May 2016 15:09:45 -0400, Phil Hobbs wrote: How about writing that book I've been bugging you about? I ponder that, but I'm not sure I'd be good at writing... circuit design is so easy for me I'm not sure I can explain how I do it ;-) You have a granddaughter with that circuit lab kit. Eventually you will explain things. Just think about how you will do that. Or occupy your time by riding a bike over the Himalayas like Pease did. Grand_son_... 8 years old... the same one who's on the All Star Inline Hockey Team and was just awarded a trophy for best defensive player of the whole league ;-) Well then just pretend that he's going to be an engineer and not a goalie. |
#14
![]() |
|||
|
|||
![]()
On Mon, 16 May 2016 07:29:45 -0400, "Tom Del Rosso"
wrote: Jim Thompson wrote: On Fri, 13 May 2016 09:11:16 -0400, "Tom Del Rosso" wrote: Jim Thompson wrote: On Thu, 12 May 2016 15:09:45 -0400, Phil Hobbs wrote: How about writing that book I've been bugging you about? I ponder that, but I'm not sure I'd be good at writing... circuit design is so easy for me I'm not sure I can explain how I do it ;-) You have a granddaughter with that circuit lab kit. Eventually you will explain things. Just think about how you will do that. Or occupy your time by riding a bike over the Himalayas like Pease did. Grand_son_... 8 years old... the same one who's on the All Star Inline Hockey Team and was just awarded a trophy for best defensive player of the whole league ;-) Well then just pretend that he's going to be an engineer and not a goalie. He's super with math, and loves the circuit lab upgrade I gave him at Christmas. But he's struggling with reading... a bit of dyslexia... time to hire a tutor (I would do it, but he needs an authoritarian type to keep him from deviating from work and controlling the conversation... he's a charmer... seeks out the girls in the crowd... and he's only 8 ;-) ...Jim Thompson -- | James E.Thompson | mens | | Analog Innovations | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | San Tan Valley, AZ 85142 Skype: Contacts Only | | | Voice ![]() | E-mail Icon at http://www.analog-innovations.com | 1962 | Liberalism: Dictatorship By The People Who Think They Know Best |
#15
![]() |
|||
|
|||
![]()
Jim Thompson wrote:
On Mon, 16 May 2016 07:29:45 -0400, "Tom Del Rosso" wrote: Jim Thompson wrote: On Fri, 13 May 2016 09:11:16 -0400, "Tom Del Rosso" wrote: Jim Thompson wrote: On Thu, 12 May 2016 15:09:45 -0400, Phil Hobbs wrote: How about writing that book I've been bugging you about? I ponder that, but I'm not sure I'd be good at writing... circuit design is so easy for me I'm not sure I can explain how I do it ;-) You have a granddaughter with that circuit lab kit. Eventually you will explain things. Just think about how you will do that. Or occupy your time by riding a bike over the Himalayas like Pease did. Grand_son_... 8 years old... the same one who's on the All Star Inline Hockey Team and was just awarded a trophy for best defensive player of the whole league ;-) Well then just pretend that he's going to be an engineer and not a goalie. He's super with math, and loves the circuit lab upgrade I gave him at Christmas. But he's struggling with reading... a bit of dyslexia... time to hire a tutor (I would do it, but he needs an authoritarian type to keep him from deviating from work and controlling the conversation... he's a charmer... seeks out the girls in the crowd... and he's only 8 ;-) I first kissed a girl at 7, and was made fun of more for that than for doing experiments. |
#16
![]() |
|||
|
|||
![]()
On Mon, 16 May 2016 11:22:24 -0400, "Tom Del Rosso"
wrote: Jim Thompson wrote: On Mon, 16 May 2016 07:29:45 -0400, "Tom Del Rosso" wrote: Jim Thompson wrote: On Fri, 13 May 2016 09:11:16 -0400, "Tom Del Rosso" wrote: Jim Thompson wrote: On Thu, 12 May 2016 15:09:45 -0400, Phil Hobbs wrote: How about writing that book I've been bugging you about? I ponder that, but I'm not sure I'd be good at writing... circuit design is so easy for me I'm not sure I can explain how I do it ;-) You have a granddaughter with that circuit lab kit. Eventually you will explain things. Just think about how you will do that. Or occupy your time by riding a bike over the Himalayas like Pease did. Grand_son_... 8 years old... the same one who's on the All Star Inline Hockey Team and was just awarded a trophy for best defensive player of the whole league ;-) Well then just pretend that he's going to be an engineer and not a goalie. He's super with math, and loves the circuit lab upgrade I gave him at Christmas. But he's struggling with reading... a bit of dyslexia... time to hire a tutor (I would do it, but he needs an authoritarian type to keep him from deviating from work and controlling the conversation... he's a charmer... seeks out the girls in the crowd... and he's only 8 ;-) I first kissed a girl at 7, and was made fun of more for that than for doing experiments. Today, you'd be expelled (for either). |
#17
![]() |
|||
|
|||
![]()
On 5/16/2016 9:22 AM, Jim Thompson wrote:
On Mon, 16 May 2016 07:29:45 -0400, "Tom Del Rosso" wrote: Jim Thompson wrote: On Fri, 13 May 2016 09:11:16 -0400, "Tom Del Rosso" wrote: Jim Thompson wrote: On Thu, 12 May 2016 15:09:45 -0400, Phil Hobbs wrote: How about writing that book I've been bugging you about? I ponder that, but I'm not sure I'd be good at writing... circuit design is so easy for me I'm not sure I can explain how I do it ;-) You have a granddaughter with that circuit lab kit. Eventually you will explain things. Just think about how you will do that. Or occupy your time by riding a bike over the Himalayas like Pease did. Grand_son_... 8 years old... the same one who's on the All Star Inline Hockey Team and was just awarded a trophy for best defensive player of the whole league ;-) Well then just pretend that he's going to be an engineer and not a goalie. He's super with math, and loves the circuit lab upgrade I gave him at Christmas. But he's struggling with reading... a bit of dyslexia... time to hire a tutor (I would do it, but he needs an authoritarian type to keep him from deviating from work and controlling the conversation... he's a charmer... seeks out the girls in the crowd... and he's only 8 ;-) ...Jim Thompson Maybe he is gay. At that age, I doubt he is horny. |
#18
![]() |
|||
|
|||
![]()
bitrex wrote:
In the mid 1980s, Roland had International Rectifier design a custom chip called the IR3R05 for their analog synthesisers. I think it was a 14 pin package...it basically consisted of 4 OTA stages like the Lm13700 configured as a 24 db/octave resonant low pass filter with inputs for voltage controlled frequency and resonance, along with a VCA with both linear and exponential inputs, all on the chip. The 4 filter capacitors were mounted off chip on the board. What kind of job would it be to design a chip or maybe a daughterboard that performed an equivalent function? These chips often fail in vintage equipment and there seems to be a decent sized market for replacements that dont require scrounging for NOS or cannibalizing old units. I wonder it the required components could be squeezed into a daughterboard that would fit the space available. Might require some vertical mounting hack. The amps in old Tek scopes also go bad, and there's a market for replacing them too. I suggested years ago that somebody should make a DIP module to replace them. Today's standard op-amps could do it I bet. |
#19
![]() |
|||
|
|||
![]()
On 06/04/2016 09:41 AM, Tom Del Rosso wrote:
bitrex wrote: In the mid 1980s, Roland had International Rectifier design a custom chip called the IR3R05 for their analog synthesisers. I think it was a 14 pin package...it basically consisted of 4 OTA stages like the Lm13700 configured as a 24 db/octave resonant low pass filter with inputs for voltage controlled frequency and resonance, along with a VCA with both linear and exponential inputs, all on the chip. The 4 filter capacitors were mounted off chip on the board. What kind of job would it be to design a chip or maybe a daughterboard that performed an equivalent function? These chips often fail in vintage equipment and there seems to be a decent sized market for replacements that dont require scrounging for NOS or cannibalizing old units. I wonder it the required components could be squeezed into a daughterboard that would fit the space available. Might require some vertical mounting hack. The amps in old Tek scopes also go bad, and there's a market for replacing them too. I suggested years ago that somebody should make a DIP module to replace them. Today's standard op-amps could do it I bet. A lot of Tek scopes use weirdly high supply voltages. Cheers Phil Hobbs -- Dr Philip C D Hobbs Principal Consultant ElectroOptical Innovations LLC Optics, Electro-optics, Photonics, Analog Electronics 160 North State Road #203 Briarcliff Manor NY 10510 hobbs at electrooptical dot net http://electrooptical.net |
#20
![]() |
|||
|
|||
![]()
On 5/12/2016 1:51 PM, Jim Thompson wrote:
I sit here bored out of my skull with nothing to do but play Solitaire until the next project start on July 5 ;-) I'm noted for custom Analog/Mixed-Signal Design and Spice Behavioral Modeling, but I also do designs using off-the-shelf components. No project is too small... I've even done one-day designs from time-to-time. Drop me an E-mail (*) (*) Do not include attachments in your first E-mail... An E-mail not matching an entry in my addressbook and with an attachment drops your E-mail into a black hole. ...Jim Thompson Did you complete the audio compressor/limiter you were working on for a bit? Mikek |
Reply |
Thread Tools | Search this Thread |
Display Modes | |
|
|
![]() |
||||
Thread | Forum | |||
diy projects to do. | UK diy | |||
Two Projects | Woodworking | |||
Need some new projects? | Woodworking | |||
do all projects end like this? | Home Repair |