Search results

  1. Omni

    Is a GFCI outlet a good or bad idea for an electronics workbench?

  2. Omni

    Is a GFCI outlet a good or bad idea for an electronics workbench?

    The only issue i am aware of concerning a nuisance trip when using a GFCI would be motor control circuit. Occasionally, a motor/pump circuit can draw a large inrush current that will trip a GFCI. The latter is one of the main reasons why a GFCI is rarely installed on a refrigerator branch...
  3. Omni

    Is a GFCI outlet a good or bad idea for an electronics workbench?

    I hold an EE and EC License in three States, your idea of using a GFCI is excellent! Safety is so very important!   :) Furthermore, down the road consider purchasing an isolation transformer and/or a variac! However, make sure the Xfmr or Variac has a decent current capability; 20A Remember...
  4. Omni

    12v to 230 volts dc with voltage doubler circuit its possible?

    Final note: Use precaution with the above circuit and read the directions provided with the project! I agree the circuit requires a bit of changes but to a certain extent it may provide some information. Truthfully, i would purchase a manufactured inverter for safety along with warranty etc...
  5. Omni

    Digital Dash - help please

    I admire your idea but what you are asking for is not an easy task. Truthfully, if you surf the web concerning the vehicle you own in reference to digital auto guages the package may already be available as a plug-in. People get the impression that building a kit or designing/constructing a...
  6. Omni

    hellp.........

    Buy an old C64 and load-in SAM...  ;D SAM, what a marvel for its time! http://members.tripod.com/the-cbm-files/speak/
  7. Omni

    invention

    Hehe, $1700.00 to kill a bug?  :o Cheap advice, use the bottom of your shoe...  ;D
  8. Omni

    need slight DC voltage reduction, 1 volt signal

    What voltage is required at the output to power the device?
  9. Omni

    ATTENTION: Illegal content (ebook/magazines/software) will be deleted

    The above is noted on the documentation provied with the item but i have yet to see it hold-up in court. Every case i viewed where an individual purchased an item and shared it with a friend was never judged illegal. Remember, the above is where the "gray area" appears, the battle is decided in...
  10. Omni

    12v to 230 volts dc with voltage doubler circuit its possible?

    I agree with audioguru, a non-transformer method for an inverter is basically for lower current devices. Although, i provided a link below that will convert 12VDC- 230VAC (300W) i am skeptical as to the longevity of the inverter along with what may occur in the event of a sag...
  11. Omni

    WATER LEVEL MONITOR FOR PUMPS

    The inrush current on a heavily loaded motor can easily cause an arc flash when switched in, i have noted it many times. Generally, under the above condition a CB will trip but during the latter time an arc is present. Obviously, the majority of time an arc flash is noted when a load is...
  12. Omni

    ATTENTION: Illegal content (ebook/magazines/software) will be deleted

    I see no fault in sharing. Example: Suppose i purchase a wood design used for a corner arch, i take the arch and lay it onto another piece of common wood and draw around the purchased arch. After the above is performed i make 10 more to complete my project. When completed with the original...
  13. Omni

    Interesting site!

    Haha, good fun! The link you provided reminded me of the web sites in the early 80s when i was the bomb! My computer: Commodore 64 with a 1200 baud modem! Sadly, i cannot remember the ISP but it was worthless...  :-\
  14. Omni

    The simplest and economical pcb etching

    Trace density along with the use of surface mount components require a more controlled (faster) process for etching. MP provided a few good reasons for the latter in which i agree. However, if you plan to use the typical size components and the PCB layout is common (open trace density) the...
  15. Omni

    PCB Etching Tank - Do it yourself

    MP, I mean no disrespect concerning my statement. The majority of hobbyist use the typical component size, i myself avoid using surface mount which would require more detail concerning PCB design along with the control method of etching. Truthfully, i never expect to duplicate a printed...
  16. Omni

    button to add a light and a button to take one away???

    Use the below links to gain an understanding as to how a counter operates. Next, purchase a breadboard along with a variety of connection wires. Finally, start experimenting! http://www.doctronics.co.uk/4510.htm http://www3.telus.net/chemelec/Projects/Counter-UD/Counter-UD.htm...
  17. Omni

    WATER LEVEL MONITOR FOR PUMPS

    A pull-up/down resistor is generally applied to an unused gate input since leaving the input open can introduce outside noise (electrical) causing the input to change state. Whenever in doubt read the data sheet concerning the gate/IC you are using concerning the latter.
  18. Omni

    WATER LEVEL MONITOR FOR PUMPS

    Keron, The links provided (schematics/circuits) are used as another alternative. Perhaps, in some way you may notice a section of the particular circuit that you can apply within your design. The added capacitance on the output of the 7805 is a simple filtering method used on many regulator...
  19. Omni

    WATER LEVEL MONITOR FOR PUMPS

    Keron, I located a few circuits on the net that may work in your application. A slight modification concerning any of the latter circuits may be necessary but the concept appear's proven regarding the designs. Take a day and view the links below, see if you can make one work in your...
  20. Omni

    PCB Etching Tank - Do it yourself

    1. Slightly oversize a pyrex glass tray to the copper clad board. 2. Pour some common Ferric Chloride in the tray and place your board in the latter solution. 3. Every 20 min using your hand lift one side and allow the ferric to wave over the board. 4. After 1 hour your board should be complete...
Top