Yoda Man

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  1. It has been a long time since I posted this to this forum. If you need help because I misunderstand what you want to do let me know! If I remember correctly I needed to connect the positive and negative leads together, then I turned the voltage knob up a bit then I adjusted the Amperage Knob to the setting I wanted. This then sets the maximum Amperage I then disconnected the positive and negative cables.
  2. Thank you for the reply. Regarding the Blue LED's that I installed it was simply a test to try and find out why the LED driver was showing the 17 - 19 volts DC instead of the 9-12 Volts advertised. This driver or rather drivers will be used to power 1- 10 Watt 12 Volt SMD chip and the consern is that to voltage will be to great for the SMD. I wanted advise here before contacting the seller on E-Bay!
  3. Greetings All; I ordered from E-Bay 10- 10 Watt SMD LED's, I then ordered a couple of 10 Watt drivers for these lights. The spec's are as follows: 10W Driver Driving power: 10w model: 3 series 3 in parallel Input Voltage: 85V~265V Output Voltage: 9-12V Current:900mA Efficiency > 88% Power Factor >0.98 Operating Temperature: -20~80 I received the drivers early and am waiting for the LED's to arrive so I decided to try and test the drivers this morning. I wired them up to my 220 Volt AC current the measured with a multi-meter the DC output. I was expecting 12 volts DC or so but I was showing a pulse of between 17 to 19 volts DC. Thinking that a load might be required I used a breadboard with a high ohm resister and 8- 5mm Blue LED's in series. The LED's all worked but there was pulsing as if the current was fluctuating, one thing I did noticed was that the circuit board used only to Diodes and not the four I expected for rectification. As a novice I have come here hoping that someone might know what is happening or if I have two defective modules? Thank you in advance.
  4. I figured it out now, it just took a lot more effort but finally got it working. The Amperage setting is not spot on but is close when applying extra voltage to the motor etc.
  5. Greetings All; I recently squired a DC Lab power supply and seem to have an issue in setting up the current limitation on the unit. The unit is SKY TOP Power STP3005 30V 5A power supply, I have listed a link to it below: https://en.skytoppower.com/project/regulated-power-supply-stp3005-30v-5a/ The unit came with a small two page manual that covers setting up the current limit in two lines. I tried several times to do this following there instructions but could not get the current limit set. I went to U-Tube and found a couple video's of other small power supplies and followed there instructions but still the same result. I believe that the issue is me not the power supply but there is a possibility that the unit might be defective? I linked both the positive and negative leads together and made sure that the voltage was set to Zero. Then I moved the course setting Amperage button to Zero which then caused the CC led to come on, then I moved the current knob clock-wise to about 25% of its rotation and at that point the LED switched from CC to CV. At this position I could move the course voltage nob now and both the current and amperage would increase. I removed the probes from being linked together and installed a LED bulb, the unit was in voltage mode and I increased the voltage and both values increase beyond the limit I thought I had set. I would appreciate and instructions/comments that might assist me in getting the current limitation set.