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  1. OLIVE2222

    Electronic Roulette Wheel

    Yes you can remove a 4017 from the circuit you have found or add a 4017 to mine with one more diodes and gate. Olivier
  2. OLIVE2222

    bigabbs

    Hi bigabbs, You can use a NE555 based voltage doubler to achieve that: http://www.ecircuitslab.com/2011/06/low-power-voltage-doubler-circuit.html just ensure that the final transistor match the solenoid current needs. Olivier
  3. OLIVE2222

    Headphone to Phono Jacks

    Hi Oisze! Here a $1.5 solution, but you lack the solder smell :) http://www.ebay.com/itm/3-5mm-Jack-2-x-RCA-Phono-Audio-Cable-Gold-1m-Lead-/220910547294?pt=LH_DefaultDomain_0&hash=item336f4b715e Olivier
  4. OLIVE2222

    tektronix 475a problem

    Hi zermello, You can dowload the 475 service manual here under: http://bama.edebris.com/manuals/tek/475 However the best think to do is to join the tekscope Yahoo group (the acceptance take few days) they are highly skilled people there to help you. Olivier
  5. OLIVE2222

    Electronic Roulette Wheel

    Hi Gunaka, Here under a way to cascade two CD4017: http://www.bowdenshobbycircuits.info/page5.htm#4017-7.gif Olivier
  6. OLIVE2222

    Reduce resistance from thermometer reading in my oven???

    Hi gijoe985, Exactly! a 10K resistor in parallel give you 1828 ohms when sensor value is 2237 ohms. Olivier
  7. OLIVE2222

    DC 12v Wiper Motor H-Bridge

    hi Kyle, Here under a selection for the darlington PNP and NPN with collector current >= 8amp in TO220 package to replace the BDW's...
  8. OLIVE2222

    Replacement ac power supply for alesis multimix 8

    Hi robb2231, according to the post here under the pin 1 is 18V AC the pin 2 is center tap and the pin 3 is 18v AC. http://forum.allaboutcircuits.com/showthread.php?t=52968&page=2 Olivier
  9. OLIVE2222

    Rat Zapper

    Hi Tezza1, I suggest to made a floor grid with two formed rigid wires. On my setup I use a 220µH toroid coil and I connect the fet gate to the NE555 output via a small resistor. Olivier
  10. OLIVE2222

    Rat Zapper

    Hi Tezza1 Don't know what' s are the needed specs to zap a rat but you can maybe try this circuit(without the strobe tube area parts) : http://www3.telus.net/chemelec/Projects/Strobe/Strobe-sch.jpg http://www3.telus.net/chemelec/Projects/Strobe/Strobe.htm I build it a long time ago, it's work...
  11. OLIVE2222

    Broken toaster

    Hi Pioneer, As your toaster is a 2X2 one you can compare the working part with the dead one to find out any difference. maybe you can also have a look on this: http://home.howstuffworks.com/toaster.htm http://home.howstuffworks.com/how-to-repair-small-appliances1.htm Olivier
  12. OLIVE2222

    I want to learn

    Hi Harrison_Grant Programming applied to electronics can be done at different level. The closer from the hardware is firmware programming. This is something low level and you must understand how to use somewhat limited processor resources and how the controller peripherals are working (look for...
  13. OLIVE2222

    Synchronizing two function generators

    Hi MobiNaz, To do that the generator must have an external trig input. This application note show you how to proceed. http://cp.literature.agilent.com/litweb/pdf/5990-3467EN.pdf Olivier
  14. OLIVE2222

    Thoughts on running a high powered RF power linear amp on an unregulated supply

    Hi Dave, With a nominal 10V secondary you will have (10X1,41)-1=13,1 =mid range of allowed supply voltage. Whith min 240V (10% tolerance) it's become (9X1,41)-1=11,69V Whith max 240V (10% tolerance) it's become (11X1,41)-1=14,51V This assuming a perfect 24 transformer ratio. Olivier
  15. OLIVE2222

    I2C acknowledgement problem and resistor pull-up

    Hi Riyaz, As the 3 involved components are from the TI portofolio I suggest you to ask support from a TI application engineer. http://www-k.ext.ti.com/sc/technical-support/product-information-centers.htm?DCMP=TIHomeTracking&HQS=Other+OT+home_d_contact Olivier
  16. OLIVE2222

    Robotics

    here under a famous book to start with robots http://robotechno.us/ebook-robot-builders-bonanza-3rd-edition.html And welcome to this forum !! Olivier
  17. OLIVE2222

    how to make buzzer only beep once.

    Congratulations Doug ! You can celebrate your Electronics-Fisherman guild membership now :D Olivier
  18. OLIVE2222

    how to make buzzer only beep once.

    Hi Doug ! That' s cool! As it' s work the wrong way just move the base resistor from 7 to pin 6. Olivier
  19. OLIVE2222

    Testing a camera module

    Hi Tave! Please post a sharp Top and Bottom picture of your camera. Olivier
  20. OLIVE2222

    how to make buzzer only beep once.

    Hi Doug ! It's almost OK now ! just need to rotate the BC548 180°(the C and the E are swapped). Olivier
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