jippie

Eindhoven, Netherlands

wirespeed.xs4all.nl/mediawiki

Age: 45

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I'm into:

  • Linux;
  • Networking;
  • IT Security;
  • Perl;
  • System integration;
  • Arduino;
  • ATtiny & ATmega Microcontrollers;
  • Analog electronics;
4h
comment FET and BJT transistor question
How about starting by writing down the formula's that apply? For BJT, for JFET? Maybe throw Kirchhoff in the mix? See how those can be combined. Because Olin is right in one thing, you're not showing much effort.
4h
comment FET and BJT transistor question
@OlinLathrop OP asked for a hint how to solve the exercise, not to do the entire homework.
10h
comment Fesibility of using "computer RAM" with a microcontroller project
This looks like an AVR with a computer DRAM module: dmitry.gr/index.php?proj=07.+Linux+on+8bit&r=05.Projects
10h
comment Regulating Minimum Voltage
Is this helpful: danyk.cz/p_ochr_en.html
23h
comment Poles in this circuit
Laplace transform has been over 20 years ago for me, but if I recall correctly: If you simplify for "s", then there are no poles left. Although useful for some calculations, I think you want to keep them for this particular exercise (or anything to do with phase shift).
1d
revised For the resistor circuit shown in the picture, what must be the missing resistance to give a total resistance of 252 ohms?
added 12 characters in body
2d
comment Multipoint Ethernet cable as an RS485 data bus
Apart from UTP and STP, there is also FTP: Foiled Twisted Pair. You can think of FTP as low budget STP.
2d
comment How to generate the gate voltage for the P-channel transistors for an H-bridge controller
Is electronics.stackexchange.com/a/152134/8627 helpful?
Feb
25
comment How to remove degradation in voltage gain when replacing the original \$R_L\$ with a small value resistor?
Add an emitter follower (comon collector) or a full push pull stage.
Feb
23
revised Can arduino coded as i code in avr?
added 197 characters in body
Feb
23
answered Can arduino coded as i code in avr?
Feb
23
revised Arduino Dimmer Shield Schematics Interpretation
edited tags
Feb
23
comment Arduino Dimmer Shield Schematics Interpretation
@RussellMcMahon interesting how similar both circuits are.
Feb
23
comment Arduino Dimmer Shield Schematics Interpretation
Found a way to upvote twice for the same answer, once at arduino.SE and once at EE.SE ;o) You can safely remove the first paragraph of your answer now. Agreed with the architecure, disagree with the often almost part. In many countries, like NL, the power plug can be easily swapped around and wall sockets are not standardized when it comes to the position of phase and neutral.
Feb
23
comment Arduino Dimmer Shield Schematics Interpretation
Is it just me or are the live tracks really really close to top left GND, VIN and A0 pins? labdegaragem.org/loja/media/catalog/product/cache/1/thumbnail/…
Feb
23
comment Arduino Dimmer Shield Schematics Interpretation
Is it just me or are the live tracks really really close to top left GND, VIN and A0 pins? labdegaragem.org/loja/media/catalog/product/cache/1/thumbnail/…
Feb
23
comment Arduino Dimmer Shield Schematics Interpretation
I don't particularly like the two buttons on the shield: The two buttons that are to be pushed with your finger are so close to the non-insulated tab of the TRIAC (and other live pins). Be careful not to get yourself bitten!
Feb
23
comment Arduino Dimmer Shield Schematics Interpretation
I don't particularly like the two buttons on the shield: The two buttons that are to be pushed with your finger are so close to the non-insulated tab of the TRIAC (and other live pins). Be careful not to get yourself bitten!
Feb
23
revised Arduino Dimmer Shield Schematics Interpretation
edited tags
Feb
23
comment Arduino Dimmer Shield Schematics Interpretation
between the gate side of the TRIAC and one mains leg (usually neutral) which is unusual and risks confusing people who are used to normal arrangements What normal arrangement are you aiming at, TRIAC gate at the other side and OK1 "pulling up"?
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