Electronics Computer-Aided Design

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Telephone Tip/Ring Question

Two lines coming in... How much risk is it to assume that both "Tips" are essentially earth ground potential? ...Jim Th...
41 comments posted 15yrs
posted by To-Email-Use-The-Envelope-Icon
41 comments posted 15yrs posted by To-Email-Use-The-Envelope-Icon

Really Obnoxious Sound

Wanted: Suggestions for a really obnoxious sound maker... (1) When connected to a phone line (2) My thoughts run simply...
77 comments posted 15yrs
posted by To-Email-Use-The-Envelope-Icon
77 comments posted 15yrs posted by To-Email-Use-The-Envelope-Icon

Spice Model for SAW Filter

Anyone know of a source of Spice Models for SAW Filters? With a variety of frequencies? ...Jim Thompson -- | James E.Th...
5 comments posted 15yrs
posted by To-Email-Use-The-Envelope-Icon
5 comments posted 15yrs posted by To-Email-Use-The-Envelope-Icon

Remote Ringer for Telephone

Anyone have a favorite circuit for a remote telephone ringer? I have access to the phone line, but no close-by source o...
17 comments posted 15yrs
posted by To-Email-Use-The-Envelope-Icon
17 comments posted 15yrs posted by To-Email-Use-The-Envelope-Icon

OT: Switch?

Looking for a low-voltage (9V) switch that displays a significant sized red (off) or green (on), easily seen from 20' a...
3 comments posted 15yrs
posted by To-Email-Use-The-Envelope-Icon
3 comments posted 15yrs posted by To-Email-Use-The-Envelope-Icon

Music Servers

Does there exist an apparatus that I could connect the audio output of my FM tuner, assign an IP address, and distribut...
22 comments posted 15yrs
posted by To-Email-Use-The-Envelope-Icon
22 comments posted 15yrs posted by To-Email-Use-The-Envelope-Icon

Old Raytheon Part

Can some ID this Raytheon part and point me to a data sheet... Labeled RAX916 ^-- this character unreadable ...Jim Thom...
3 comments posted 15yrs
posted by To-Email-Use-The-Envelope-Icon
3 comments posted 15yrs posted by To-Email-Use-The-Envelope-Icon

High Resolution Screen Capture

Is there any way to do a high resolution screen capture? All of the Windows-XP built-in Print Screen stuff is crappy co...
20 comments posted 15yrs
posted by To-Email-Use-The-Envelope-Icon
20 comments posted 15yrs posted by To-Email-Use-The-Envelope-Icon

OT: Home Thermostat Recommendations?

OT: Home Thermostat Recommendations? With all this global warming (:-) I find myself having to manually switch daily be...
25 comments posted 15yrs
posted by To-Email-Use-The-Envelope-Icon
25 comments posted 15yrs posted by To-Email-Use-The-Envelope-Icon

Spice Model for GaN LED

Can someone please help me how to calculate those spice models values (Is, Rs, N...) for the following LED: http://www....
0 comments posted 15yrs
posted by wado79_at_yahoo_dot_de
0 comments posted 15yrs posted by wado79_at_yahoo_dot_de

Is this possible?

Is this is possible? I just had a client request a +1V supply (a switcher) that SINKS 200mA. I only have +5V available...
7 comments posted 15yrs
posted by To-Email-Use-The-Envelope-Icon
7 comments posted 15yrs posted by To-Email-Use-The-Envelope-Icon

IEEE Paper

Can anyone here access this IEEE paper for me... http://tinyurl.com/24cs5ll Thanks! ...Jim Thompson -- | James E.Thomps...
1 comments posted 15yrs
posted by To-Email-Use-The-Envelope-Icon
1 comments posted 15yrs posted by To-Email-Use-The-Envelope-Icon

Small Signal Schottkies

Seems like "hold-hands week" :-( Out of the blue a customer calls, needing a small signal Schottky with CJO
3 comments posted 15yrs
posted by To-Email-Use-The-Envelope-Icon
3 comments posted 15yrs posted by To-Email-Use-The-Envelope-Icon

Crystal Oscillator: Drive Power

An old project coming back, _trying_ to bite me... Crystal Oscillator, classic CMOS inverter configuration, End custome...
16 comments posted 15yrs
posted by To-Email-Use-The-Envelope-Icon
16 comments posted 15yrs posted by To-Email-Use-The-Envelope-Icon

Video Monitor "Repeater" Over Network

Is there a way to "repeat" (*) a monitor over a CAT-5 network? (*) View from another PC on the network. ...Jim Thompson...
22 comments posted 15yrs
posted by To-Email-Use-The-Envelope-Icon
22 comments posted 15yrs posted by To-Email-Use-The-Envelope-Icon