Top new questions this week:

Why is the temperature range of industrial and military products so high?

From Wikipedia the common temperature range for electrical components is: Commercial: 0 to 70 °C Industrial: -40 to 85 °C Military: -55 to 125 °C I can understand the lower part (-40°C and -55°C) ...

temperature semiconductors reliability industrial

asked by ElectronS 28 votes answered by Olin Lathrop 52 votes

What is the purpose a buffer gate?

As I understand a buffer gate is the opposite of a NOT gate and does not change the input: However I sometimes see buffer gate ICs used in circuits and to an inexperienced eye they seem to do ...

logic-gates buffer

asked by I have no idea what I'm doing 18 votes answered by metacollin 32 votes

What challenges restrict the resolution of spacefaring digital cameras?

I've been reading up about NASA's Juno mission, and came across the Wikipedia article about JunoCam, which is Juno's onboard visible-light camera. In the article, it's mentioned that the resolution ...

sensor camera space

asked by Jules 15 votes answered by WhatRoughBeast 23 votes

how should I label components changing between PCB versions?

I have a current version of my PCB, and I'll make a new one where I will delete some resistors here and add some more there. What's the common rule for numbering? Should I re-use the numbers of ...

pcb-design

asked by nraynaud 9 votes answered by KalleMP 9 votes

Are there any quick way to tell if a filter is high-pass, low-pass, or band-pass, just by looking at the transfer function in the s domain?

How can I quicly determine if a given filter's transfer function like: \$ H(s)=\frac{k}{s^2+ks} \$, or \$H(s)=\frac{1}{s+k}\$, is either a low-pass, high-pass, or band-pass ?

circuit-analysis filter signal-processing

asked by JBee 9 votes answered by Federico 2 votes

Why does voltage not appear in the battery life calculation?

I have a PCB with a few radio modules on it. In its various states it currently uses anywhere between 100 µA and 100 mA. I can calculate how much time it spends in each of its states over a given ...

batteries low-power power-consumption

asked by Eliot 9 votes answered by dim 16 votes

What happened to all of the Dynamic Signal Analyzers?

Decades back there were at least half a dozen instrumentation companies offering Dynamic Signal Analyzers (DSA's). Not Spectrum Analyzers, but rather Dynamic Signal Analyzers. The main differences ...

servo analysis testing spectrum-analyzer instrumentation

asked by docscience 9 votes answered by Neil_UK 4 votes

Greatest hits from previous weeks:

How are current and voltage related to torque and speed of a brushless motor?

I know that electric vehicles have different performances depending on battery and motor, but it's not clear how electrical and mechanical units are related. Can anybody please help? Will a 100V ...

motor speed torque brushless-dc-motor

asked by jumpjack 14 votes answered by helloworld922 19 votes

Why is high input impedance good?

Naive perhaps, but Why is high input impedance a good thing? Is high input impedance always a good thing?

impedance

asked by Everyone 28 votes answered by Oli Glaser 36 votes

Can you answer these?

Complete Noise Analysis: to find the minimum detectable signal of a TIA

Problem Statement: my aim is to digitalize a 10ns narrow pulse coming from a photo diode with current ranging from 10nA-70mA, as its impossible to cover this dynamic range of >60dB using a single TIA ...

op-amp photodiode

asked by kakeh 1 vote

How can a USB-RS232 converter manually assert its TX pin?

I honestly don't know if this is a Electronics Stackexchange or Stackoverflow question, but I'm posting here because this is related to an electronics project of mine that has been giving me pain for ...

serial rs232 usb-device picaxe

asked by Dave 3 votes

Using an accelerometer/gyro for camera panning

I'm trying to work with a MPU6050 accelerometer/gyro for panning a camera (rotating about the Z axis) like a 1-axis gimbal. I can successfully make it tilt by reading the acceleration values along the ...

sensor accelerometer

asked by John Munroe 1 vote