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Recent content by ewandeur

  1. E

    USB Programmer schematic needed

    schematic 89s52 I'm trying to use PIC12F629, 12F675, 16F84A, 16F648 All of them from Microchip.
  2. E

    USB Programmer schematic needed

    usb programmer schematic Hi everyone! I used to use a Serial programmer for my microchip projects until today, but as everything changes, my new computer only has USB port and my serial programmer became "ancient history". Does anyone have a simple usb programmer schematic , with easily...
  3. E

    PSU to connect PC in CAR

    conect pc to car Ok, I need a PSU with + 12V 10A - 12V 5 A + 5V 10A - 5V 5A + 3.3V 5A and I intend to adapt an ATX connector to supply directly my motherboard. It can be done, or I'll need an inverter ?
  4. E

    PSU to connect PC in CAR

    connect pc to car Hi ! I'm in need of a PSU schematic to use my PC in Car. I´m previously used an inverter successfully, but why convert DC to AC and back to DC again? Could anyone help me with a schematic with "easy-to-obtain" parts ? Tks !
  5. E

    Audio Amplifier battery operated

    Thanks for your help, i've just pressed the button (helped me). By the way, I will use this amplifier with a 4 ohm miniature tweeter to deliver "burst of sound" like in an car alarm, so I think the 9V battery will do the job.
  6. E

    Audio Amplifier battery operated

    Hi, I´m in need of an audio amplifier schematics, who can deliver at least 2W @9V battery to be used in a portable equipment. Tkx
  7. E

    IR Remote Control using phototransistor, is it feasible?

    Hi, I appreciate the "clues", but I'm really need only a range of 2 or 3 meters, is there any option to improve the range within this limits using a phototransistor + opamp? tkx a lot
  8. E

    IR Remote Control using phototransistor, is it feasible?

    I am trying to use a phototransistor and a LM358 OP AMP instead of a IR module such as TSOP1738 to receive the signal, but it only works at small distance (30 to 40 cm). Is there any other option to increase the distance, i.e. using lenses, another OP AMP? TKx in advance
  9. E

    Need resources to learn PIC Basic

    pic12 basic try this link h**p://www.picbasic.co.uk/forum/ it may help you with some information.
  10. E

    Powerful 433.92/315 Transmitter Needed

    ok, could you please provide an example how to connect the transistor with the module? Tkx
  11. E

    Powerful 433.92/315 Transmitter Needed

    tws433 module schematic Hi, I am actually using with RF modules such as TWS433 in my remote controlled applications, but they have a "lack" of power in transmission. Could anyone have a schematic of a more powerful transmitter or a booster ? Tkx
  12. E

    DTMF interface for decoder

    Hi, I'm looking for a schematic for interfacing telephone line to a DTMF decoder (HT9172 Holtek), in order to build a remote control activated by phone. Tkx.
  13. E

    Optocoupler driving a relay

    4n35+relay Please, Can I use a 4N35 to drive a 6V relay directly, or I will need to use another transistor to make an interface ? Tkx
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