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| Title | Author | Views/Replies | Posted at |
 PIR MOTION DETECTORHI, I got a PIR motion detector wired type and convert it into wireless by adding a RF transceiver (to detect the N.C. contact). In beginning I use it direct wired to my alarm, the PIR working fin... |
lassa | 4/11 | 2008/9/3 20:35 |
| Lead acid battery corrosion. I had an old battery sitting out for the last while. Dunno if it was charged when it arrived (unlikely) but it's dead now. Somehow a small extruded aluminum angle bit about 3" long found it's way on t... |
ai8957382 | 3/4 | 2008/9/3 22:11 |
| Express PCB Is anyone proficient with express pcb? I seem to have made a boo boo when going from schematic to express pcb & can't fix it. Thanks |
wyslnhhh56 | 4/4 | 2008/9/3 21:51 |
| Newbie needs help... QProx QT220 PCB design. I'm hoping someone can help me design this board. I'm not much at all knowledgable about what certain components (resistors, capacitors, diodes, etc) do but I'm trying to learn.I'm planning on using a... |
z4120356 | 3/6 | 2008/9/3 21:20 |
| LED resistor Which is the correct value for a resistor to make an LED work with a 17 or 18 volt AC model railroad transformer?Is this value the same for all the colors of LEDs?I use 1500k resistors, but it seems t... |
yutcxa | 4/7 | 2008/9/3 21:54 |
| Supply. What voltage suply should i use to charge a 7.2v battery pack? |
rickli | 6/8 | 2008/9/3 23:01 |
| Driver Stage Tested the driver stage.. 6CL6, 370V supply, 8k supply load, 33k screen dropper, 100 ohm cathode bias. Basically, the same deal as seen in the quad 6146 amp...(well, that shows 80 ohms bias. Whateve... |
stgod | 8/1 | 2008/9/3 20:13 |
| Circuit WANTED PIONEER RX-370 RX-570 Can EXCHANE Please, who know, or who have circuit I need it , send please on vega-4@eanetways.com I can exchange I have some Don't send me on pioneer site...Who know where can I download that circuit?vega-4@eane... |
fujun2013 | 4/2 | 2008/9/3 20:40 |
| LED mulitiplexing and brightness I've been given 1000 green LEDs, as they are rather old I'm assuming Vf of 2.1 and Ityp. 20mA. Considering constructing a 8x8x8 cube with them. This would use 512 of them and 8 would be easier to de... |
spacebac | 5/11 | 2008/9/3 22:01 |
| Cannon Camcorder About 3 years ago, Today.. I bought a cannon camcorder and recently the A/C adapter stoped working.... I decided to take a closer look to find that the plug seems to have sustained some form of damage... |
scuzt | 2/11 | 2008/9/3 22:25 |
| Hey, click here and we can both get a free iPod Hey, click here and we can both get a free edit by the new mod team |
yutcxa | 3/6 | 2008/9/3 21:22 |
| 5w luxeon using simple resistor Hi, I am about to build a torch using 7x1.2v 2500mAh NIMH cells going to a LHXL-LW6C 5 watt luxeon with a 2.7 ohm 5 watt in series.The typical forward voltage of the luxeon is 6.84 with a max of 8.31 ... |
yutcxa | 3/11 | 2008/9/3 21:32 |
| Need help modifying a digital clock Need help modifying a digital clocki just soldered this digital clock for my school project. But i found out that the original design of the clock will not meet the requirements laid by my teacher. ... |
z315 | 3/6 | 2008/9/3 21:09 |
| Filter Cap Are filter caps in standard trafo/bridge rectifier power supplies always electrolytic because electrolytic capacitors are the only common kind that have very high capacitances?If I had a very large ce... |
hgping | 4/7 | 2008/9/3 21:55 |
| Hello all, from me Hello to all, I am an 18 year old Student from Preston, UK. I mainly deal with computers, but have a huge interest in electronics, mainly devices such as thermo-electric coolers and power generation d... |
anuo2008 | 2/3 | 2008/9/3 21:57 |
| Amplifier output impedance Imagine an NPN bipolar transistor in common-emitter configuration, with a load resistor. Is the output impedance of this amplifier equal to the load resistance? |
wy830115 | 4/2 | 2008/9/3 21:06 |
| Q4004L4 TRIAC Good day to all. Im new here. can i ask anyone to help me how to use Q4004L4 TRIACS. I have my finish circuit but my but my TRIACS doesnt work. The MT1 Pin of my Triacs connected to 220AC as an in... |
z315 | 4/8 | 2008/9/3 21:26 |
| Camcorder battery The battery for my camcorder doesn't seem to be recharging correctly. I left it on the recharger last night till I got up, and when I put it on the cam it didn't come on. Then I put it back on the rec... |
dongyea | 6/7 | 2008/9/3 21:08 |
| need diode equivalent info g'day guys , can anyone help me with some info on a replacement diode for these 2 diodes, VD1121 and VD1221 they are part of the amp on a realistic sta-2250, i really like this amp and have had it for... |
gao51755775 | 5/20 | 2008/9/3 21:06 |
| Variable speed muffin fan? Hi everyone. I need help!I have:1 3" muffin fan, DC12v 0.14A1 5k linear pot1 12v power supplyI want to make this thing slow to a crawl, and rise to about 70% max speed.Can I do this with these parts?W... |
stgod | 5/16 | 2008/9/3 20:37 |
| Can some one tell me what part this is? Canon A70 digital camera:Is this part the "Fuse" the part break down page says? i dont see anything else that could be a fuse but it doesnt look like a fuse. The camera was working then i took it back... |
chdd | 3/11 | 2008/9/3 20:59 |
| So I Hello kids.Anyone remember me?Yes, I have been slacking and to be 100% honest....NOT BEEN DOING ANYTHING WITH ELECTRONICS!!! (tsk tsk tsk)But alas, winter is coming and I will need to spend a bit more... |
ken7976 | 7/10 | 2008/9/3 22:18 |
| Estate sale The following is some things for sale of the estate of the late Fred Nachbaur ( http://dogstar.dantimax.dk )Add at least 3" to all dimensions for box and bubblewrap.B&K 1460 oscilloscope. No manual. F... |
398338 | 4/13 | 2008/9/3 20:43 |
| Spam mails Hi Guys,Does anybody know how I can get rid of this spam mails?Ante,free gifts guy has sent you this email fromhttp://www.dutchforce.com/~eforum/index.php.hey i now a rlly cool website were u can get ... |
addxjyx | 4/14 | 2008/9/3 20:47 |
| I need a notch filter @50Hz Hi guys,I need an active filter design for a notch filter @ 50 Hz using an OP AMPThank u all |
naoge | 5/5 | 2008/9/3 21:26 |
| AlphaNET Message Editor v3.0 Hi,I lost my programme AlphaNET v3.0 from LED SIGN and want to buy back the copy.I do not need Cd/DVD-ROM (shipping on the e-mail)sklark1(at)gmail.com |
z4120356 | 5/8 | 2008/9/3 22:14 |
| Need help with motor overload circuit I have designed a motor overload circuit but im unable to find the parts I need. It needs to run on 24V DC, 30A, have a remote reset, and when it detects an overload kill the circuit. This is what I h... |
pdang | 4/25 | 2008/9/3 20:22 |
| Please Help - Voltage Question Hello, I hope you can help me. I recently (2 months ago) bought a 70w High Pressure Sodium light for my home. It stopped working. I initially thought it was the bulb and went to my Home Depot an... |
naoge | 3/3 | 2008/9/3 20:14 |
| Voltage Regulator Replacement Hi, unfortunately I used the wrong power supply on my TFT monitor, and blew the voltage regulator (should have used 12V).The part is a KIA 7809A (P 110). It is a 3-pin type.I am trying to find a new o... |
hgping | 4/4 | 2008/9/3 20:35 |
| Activating solenoid with a 555 Hi, for a project, among other things I need to steer a car (toy car) around one 90 degree corner after about 15-20 seconds of straight driving, then drive another 10 seconds or so straight ahead (the... |
chdd | 3/1 | 2008/9/3 21:07 |
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