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  1. S

    Power Supply and Multimeter at 3,3 Ampere...

    The powersupply itselves is done so far. I can change the voltage from something about 0 up to 30 Volt and the current LED seems to work fine! Now I have to grill some AVRs to get the multimeter working  ;D and build a small case... Want to see some pictures? Here you go:
  2. S

    Power Supply and Multimeter at 3,3 Ampere...

    It's me again! I nearly have done the powersupply, only the transformer is not available  :-\ Although here are the first pictures including a modified layout:
  3. S

    3-Axis Stepper Controller

    exactly i too had hard time in finding those 5804 chip. either no availability or too costly for a small CNC project.so i moved for pic based stepper controller(linistepper)
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    Power Supply and Multimeter at 3,3 Ampere...

    I just finished the the layout and the schematic diagramm (Eagle files) !! After buying all reqired parts I will post some fotos and a link to the german HowTo  ;D
  5. S

    Power Supply and Multimeter at 3,3 Ampere...

    Well, the problem is, that i cannot find exactly the same resistor... I only found 9 Watt resistors from 0,33 to 0,47 Ohm, but it would be too small, wouldn't it? And don't worry about the cooling stuff, I have some old CPU cooler. I wanted to use a fan anyway  ::)
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    Power Supply and Multimeter at 3,3 Ampere...

    Once again a big thanks for your help!! After searching a while on my german shop's site I decided to choose these parts: and some heatsinks I already bought. Are the 10.000 uF of C1 enough? It's the biggest on I found... BTW: I would really like to make a HowTo of my version of the power...
  7. S

    Power Supply and Multimeter at 3,3 Ampere...

    Thanks for your reply! I decided to use the KBU 4J. Are there any other parts, which would also work on there limit, if I have a max current output of 3.3 A on the transformer?
  8. S

    Power Supply and Multimeter at 3,3 Ampere...

    First of all, I want to use this transformer. Yes, I'm from Germany  ;) Input Voltage: 230 V Output Voltage: 2x 12 VAC Output Current: 2x 3,33 A Power: 80 VA Do you have any partnumber for suitable diodes? I don't really want the 1N5402 to operate on there limit, I would realy like some buffer...
  9. S

    Power Supply and Multimeter at 3,3 Ampere...

    I ust worry about D1, D2, D3 and D4 because they are specified for only 3.0 A but there will be an possible input current of 3.3 A  ???
  10. S

    Power Supply and Multimeter at 3,3 Ampere...

    Just a short question: What do I have to change, if i want use an 24 VAC 3,3 A transformer for the "0-30 VDC STABILIZED POWER SUPPLY" and the "Voltmeter + Ammeter LCD panel"?
  11. S

    Sound Level Indicator

    Hi AudioGuru
  12. S

    12v radio transmitter/reciever

    well that pic u posted look like FM transmitter? but u said u want RF transmittr right...aim i confused :-\
  13. S

    Digital motorcyle gauges

    "5" ?? ??? ???
  14. S

    Digital motorcyle gauges

    well why i liked above ckt is bcz of its simplicity. it can remember the last distance travelled. and ofcourse i need speed of the bike.i may face problem while attaching the sensor moudule on wheel.
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    Digital motorcyle gauges

    then insted of using char. display LCD u shld go for graphic display LCD so ru gona make this ckt?or do u have any other speedometer schematic.
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    Digital motorcyle gauges

    well iam also thinking of making such thing i found this http://www.edn.com/article/ca529384.html but i need help in microcontroller handling and programming
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    Remote Control Of Battery Powered LED's

    well i did this long time ago. drawback in IR is u have to maintain direction. try to get a cheap RC car(china made) remove motor from receiver and connect LED's in series or parallel according to ur LED count throght some resistor(to protect the LED) if the LED count is high,connect the output...
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    3-5V DC @50mA from 230V AC without transformer

    i found 2 ckts for this purpose http://www.geocities.com/tjacodesign/supply/supply.html http://www.electronics-lab.com/projects/power/022/ which one u think efficient and safe for driving an led
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    best voltage and current regulator

    ohh right.then i miscalculated the resistor value. problem here is i dono the forward voltage of the led iam using. i got them from a  local electronics shop(shop guy said that he dono LED details).they r bright enough when i connect 2 AA cells in series. so can i consider its forward voltage as...
  20. S

    best voltage and current regulator

    OOps i forgot. we r using 5 100Ohms resistors for each(5) LED seperately.to provide exact amount of current.but the problem is with the output supply of receiver circuit.its only working when we feed 3.6volts exactly.and when we connect led to this voltage they r burning out.(i fried up 10 led...
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