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January 26 2013

clifford
13:03
6604 0670 500
Zero-drop current sensor for nA and pA ranges
(with ultra-low offset opamp, e.g. MAX4239ASA)
Tags: elektronik

January 25 2013

clifford
16:03
Ich hab ein SPL Script geschrieben mit dem man runde Rechenschieber machen kann:
Tags: elektronik
Reposted bygruetzemazzodatacopastridSpinNE555

January 19 2013

clifford
11:16
2N3055 NPN Transistor Decapitated
(Metalab Elektronik Kurs Experimentiergruppe)
Tags: elektronik
Reposted bymetalabAndihanseSpinNE555MarkusBecshallowAndiSpinNE555nibbler

December 07 2012

clifford
18:26
9476 b4f2 500
WTF Qucs!? Ich bin mir ziemlich sicher, dass dieser DC-Pegel keine Funktion der Leitungslänge sein kann..
Tags: elektronik

November 01 2012

clifford
21:45
Probing VC830 IR Led
Tags: elektronik
clifford
21:44
Probing VC830 IR Led
Tags: elektronik
clifford
21:44
Decoding VC830 IR Data
Tags: elektronik

October 27 2012

clifford
08:08
3838 cba3 500
Nachtrag zur gestrigen Elektronikkurs-Experimentiergruppe
Filterung von Ringing bei schnellen Flanken auf wild durch die gegend fliegenden Drähten.
Tags: elektronik

June 29 2012

clifford
13:15
2153 7771 500
vusbmicro - the beauty and the beast ;)

You can buy a kit now..
Tags: elektronik
Reposted fromhackerspaceshop hackerspaceshop

June 09 2012

clifford
19:40
4820 8858 500
vusbmicro - cardboard mockup for testing the mechanical aspects of the tight component placement
Tags: elektronik
Reposted bymaywrestleralphabetpowertomaton0gmazzoohackerspaceshop

June 02 2012

clifford
12:00
3324 0f27 500
PCB trace cut with an utility knife
Tags: elektronik
Reposted byastrid astrid

May 31 2012

clifford
23:22
1306 c659 500
Aktuelles hackerspaceshop vusbtiny/vusbmicro board design

Tags: elektronik
Reposted byf4m8hackerspaceshophackerspaceshop

May 04 2012

clifford
11:45
3031 9475 500
Meine alternative Arduino IDE fuer den
Metalab "C fuer Microcontroller" Kurs
(under development)
Tags: elektronik
Reposted bycitizen428datacop

April 09 2012

clifford
20:31
2088 206b 500
Please Help! Can anyone tell me why U9 is oscillating? Obviously the LTC6244 is unity gain stable (see U7, U10). The oscillation frequency is about 1.2MHz. The simulation time-step is 10ns.

LTspice schematic:
http://svn.clifford.at/handicraft/2012/diffprobe/DiffProbe.asc

(in case you are wondering: L2 is the secondary inductance of a 1:1 transformer. The "K" statement for that and the primary are not captured in the screenshot.)

PS: I've now solved it.
Tags: elektronik

March 22 2012

clifford
15:47

January 08 2012

clifford
16:54
Improvised E-Field-Meter
Tags: elektronik
Reposted bybobbydastrid

January 06 2012

clifford
03:05
Play fullscreen
Clifford's electric field sensor 
Du weisst du bist im metalab wenn..
Tags: elektronik

November 01 2011

clifford
13:28
2110 8c8f
Gotcha!

The TCK pulses should be at least 0.5 ms long and all transitions of TDI, TDO and TMS should happen on the falling edge. So the clock cycle shown on the left is fine but the right one is a glitch:

The TCK pulse is to short (only a quarter of a ms). There is a TDI and TDO transition on the rising edge and the TDO pulse has only been captured in a single sample (sampling clock is 19kHz). I'd really like to see the analog levels of this event with a much higher time resolution on my scope. But unfortunately I don't have stuff like pulse width triggers on my scope so I fist need to build a trigger circuit.. (Nothing fancy. A small AVR program should do the trick.)
Tags: elektronik
clifford
11:11
Troubleshooting JTAG Problems with my brand new under construction ArduLogic Arduino-based logic analyzer.
Tags: elektronik
Reposted byn0g n0g
clifford
10:56
9244 ed3b 500
Troubleshooting JTAG Problems with my brand new under construction ArduLogic Arduino-based logic analyzer.
Tags: elektronik
Reposted byn0g n0g
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