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Recent content by kbtan

  1. K

    Can a lead acid batter be changed and use at the same time

    no wat i mean is can a lead acid battery be charged mean while it is supplying power to other system
  2. K

    Can a lead acid batter be changed and use at the same time

    I am doing a solar tracker that will charged a 12V 7.2AH lead acid battery. So my plan is the solar panel will charged the battery at the same time the battery will provide power to the motor for the solar tracker movement. Is this possible to do it by using a lead acid battery?
  3. K

    Lead Acid Battery charger

    Can i connect my hardware to the 12v lead Acid battery when it is charged with 13.5V. If can what will be the output voltage
  4. K

    Phase locked loop lock range

    Hey huys... do u all know how to set the phase locked loop locked range from 1Mhz to 10Mhz? I am using 74Hc4046AE IC . below is my schematic. I know i new to change the value of low pass filter and pin 11 resistor and pind 6<7 capacitor. can you guys teach me/ help me change the value. Tq
  5. K

    Light Dependent Resistor(LDR) tolerance problem

    Sir, how should I use the photodiode as the sensor. Can you give me a refference?
  6. K

    Light Dependent Resistor(LDR) tolerance problem

    I am designing a solar tracker using 2 LDR and a op-amp as a comparator to compare the light intensity from LDR. Below is my schematic The problem is the LDR that I bought won't have exactly the same resistance when receive same light. There are some difference on the resistance especially at...
  7. K

    [Moved] Identify MOSFET Transistor

    Re: Identify MOSFET Transistor may i know which is more power efficiency?
  8. K

    [Moved] Identify MOSFET Transistor

    Re: Identify MOSFET Transistor excuse me, may i know whether using L293 IC as my H-bridge is better or i build it using mosfet transistor
  9. K

    Which voltage regulator is better to use?

    Thk Sir. Is it better to use a switching regulator for battery charging??
  10. K

    Which voltage regulator is better to use?

    I am trying to regulate voltage from solar panel to 12v. the maximum voltage of the solar panel is 18v and 0.6A. Which voltage regulator is better to use LM317 or 7812.
  11. K

    [Moved] Identify MOSFET Transistor

    I am trying to use 4 mosfet tansistor to build a H-bridge to control the motor. The input voltage should be 12V and 1A. Can any one suggest which mosfet transistor is suitable for the circuit. Thanks
  12. K

    H-Bridge for dc motor problem

    Hi, I am using a H-Bridge with 4 transistor(2 TIP31a, 2 TIP32a). Following is my circuit I supply 12V to the collector of TIP31a and 3V to the base. Then motor will start run when I supply 3v to one side and other side to ground,but it run at about 2.3V instead of 12 V. How can I make the motor...
  13. K

    Solar Battery Charger

    I am trying to do a solar charger to charge up a lead acid battery. My solar panel will generate a about 22V and 0.24A with about 5W power. Is it possible to charge up a 12V 7.2AH battery. How long can the battery be charged. I found out some circuit diagram in internet but most of the solar...
  14. K

    [SOLVED] Suggestion on trigger circuit

    Sorry Sir.I think 3.3V is for the LED. for R4 , i touch the R4 resistor with the multimeter, it give out such reading Sir in post 29 is it neccessary to put the diode??. I try put the diode parallel to it with the anode(no strip) facing toward pin 4 . When I press the switch the LED will...
  15. K

    [SOLVED] Suggestion on trigger circuit

    Sir, I tried to build the circuit but there are some problem with it. 1) once the switch is press the LED light won go off after 5s. It only go off when i remove C2 connection to ground. 2) I am using HEF4093BP NAND GATE instead of using CD4011. Is it compulsary to use CD4011??? 3) The battery...

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