Hobby Electronics Basics

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Weather

Spring-like. That's why I moved straight to Arizona after I graduated from MIT in 1962... I hate cold ;-) ...Jim Thomps...
15 comments posted 11yrs
posted by To-Email-Use-The-Envelope-Icon
15 comments posted 11yrs posted by To-Email-Use-The-Envelope-Icon

Filter Design Software

I need a filter with the following specs: Center frequency: 2MHz Nose Bandwidth (-3dB): 20kHz -60dB Bandwidth: 40kHz Ca...
6 comments posted 11yrs
posted by To-Email-Use-The-Envelope-Icon
6 comments posted 11yrs posted by To-Email-Use-The-Envelope-Icon

OT: Football "Physics"

http://www.thedailybeast.com/articles/2015/01/24/basic-physics-may-defeat-deflategate.html ...Jim Thompson -- | James E...
26 comments posted 11yrs
posted by To-Email-Use-The-Envelope-Icon
26 comments posted 11yrs posted by To-Email-Use-The-Envelope-Icon

AD834 Spice Model Updated

The Spice Model for the ADI 500MHz Four-Quadrant Multiplier has been updated (AD834_SPICE_Model.zip) on the Device Mode...
0 comments posted 11yrs
posted by To-Email-Use-The-Envelope-Icon
0 comments posted 11yrs posted by To-Email-Use-The-Envelope-Icon

John Larkin Was That You on the News?

There was a brief clip of a John Larkin being interviewed as one of the passengers on one of the flights that was the o...
2 comments posted 11yrs
posted by none
2 comments posted 11yrs posted by none

Why dont they make a "Light Emitting TRIODE"

The LED ("Light Emitting DIODE") is common place now. In fact it seems like they went from being simple "power on" indi...
14 comments posted 11yrs
posted by electron206
14 comments posted 11yrs posted by electron206

Any of you use Multisim?

Any of you use Multisim? Can Multisim handle PSpice/LTspice style behavioral expressions... GDC_I1 X2 VN VALUE {(1+TANH...
10 comments posted 11yrs
posted by To-Email-Use-The-Envelope-Icon
10 comments posted 11yrs posted by To-Email-Use-The-Envelope-Icon

re and RE (AoE)

From "The Art of Electronics" second edition, p.81: "the load sees a driving impedance of re = 25 ohms, since Ic = 1mA....
5 comments posted 11yrs
posted by mhdpublic
5 comments posted 11yrs posted by mhdpublic

OT: 3" Toilet Flapper without the !@#$% Low Flow Vent

OT: 3" Toilet Flapper without the !@#$% Low Flow Vent Where can I get it? Or has the nanny state forbid such? Then how...
5 comments posted 11yrs
posted by To-Email-Use-The-Envelope-Icon
5 comments posted 11yrs posted by To-Email-Use-The-Envelope-Icon

The entire history of TV is lost with HDTV

When I was a kid, I remember shutting off the B&W and seeing that bright white spot in the middle of the screen. As a k...
22 comments posted 11yrs
posted by electron206
22 comments posted 11yrs posted by electron206

Which voltage regulator would be best for this?

I have a lot of inspection tools that use 1.55 volt button batteries. If the voltage from the battery drops below 1.45...
4 comments posted 11yrs
posted by etpm
4 comments posted 11yrs posted by etpm

Voltage-Variable Phase Shifter

Anyone have ideas regarding how to implement a voltage-variable phase shifter useable at 210MHz? ...Jim Thompson -- | J...
12 comments posted 11yrs
posted by To-Email-Use-The-Envelope-Icon
12 comments posted 11yrs posted by To-Email-Use-The-Envelope-Icon

HP 3325A Function Generator crapped out

My HP3325A has moved from "working fine" to "brief flash of the LEDs when the power button is pushed, then all goes dar...
6 comments posted 11yrs
posted by MyNameForward
6 comments posted 11yrs posted by MyNameForward

LTSpice transformer mystery

Any idea why the circuit below (also at the posted link) behaves like this? The load impedance at the secondary is 100K...
15 comments posted 11yrs
posted by mhdpublic
15 comments posted 11yrs posted by mhdpublic