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  • Users: yanco
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  1. yanco

    Sourcing Transformerless AC/DC Converter IC

    I am looking for Transformerless AC/DC Converter IC. Anybody can help me on any semiconductors manufacturer do produce the IC of below rating :- Input AC :- 220~240 V Output DC :- 12 V Output Current : 0.5A-1.0A
  2. yanco

    Control of DC Motor Driver - Help

    I am using BA6219 reversible motor driver from ROHM. The Resistor connected to the BA6129 is 10 ohm 5 Watt. The 10 ohm is connected to input of the 18 V unregulated adaptor which is supply to Pin 8 of the motor driver. The 7812 output is supplying 12 V to the rest of the circuit. 7812 is not...
  3. yanco

    Resistor Too Hot Solder Joint Melt

    I am using BA6219 reversible motor driver from ROHM. The Resistor connected to the BA6219 is 10 ohm 5 Watt. The 10 ohm is connected to input of the 18 V unregulated adaptor which is supply to Pin 8 of the motor driver. The 7812 output is supplying 12 V to the rest of the circuit. 7812 is not...
  4. yanco

    How to Measure Life Span of DC Motor

    I am working on a project to measure the life span of a DC motor in oscillating movement. The project can consist of PICmicro with LCD Display. I would like to get some ideas and the standard way to measure the life span ? Pls comments and give ideas.
  5. yanco

    7812 Get Hot / Vin Voltage Drop

    I have a circuit connected in this way, the input voltage supply from non-regulated adaptor is 18V 1000mA. 18 Vin o-------------7812 -------- | | | | | R= 10ohm 5 watt | | | | Pin7 Pin 8 of...
  6. yanco

    UMC Multiple Melody Generator IC

    I am trying to source this UMC series IC, datasheet and suppier for the multiple melody generator IC, ie UMC 3481, etc. Couldn't find in the net, any body could help me please.
  7. yanco

    Small DC Toy Motor (Noise)

    I would like to know what is the different in between metal contact and carbon contact on the above subject. Why the carbon contact have higher noise and any method to reduce the noise of the motor ? Any article on the above subject highly appreciated. Thanks.

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