Mga DIY na kapakipakinabang sa inyo at sa iba.

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Re: Mga DIY na kapakipakinabang sa inyo at sa iba.

Post by ultrasonic™ on Sat Jun 29, 2013 5:50 pm

james wrote:Sir ultrasonic yung bang fbt/coil tester pwede na ang mylar capacitor dun? Wala kasing makitang mkt dito sa amin.

 pwde sis... di nmn masxadong critical yan sa performance

off topic:
ano pa kaya ang maganda epost dito? thinking

james wrote:Hay salamat natapos at nadetect na rin ang pickit2 ko na galing sa post ni maam mylene. cheers

Di ko pa lang natetest makapagprogram ng iba pang mcu.  lol!

 oie congratz sis...

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Re: Mga DIY na kapakipakinabang sa inyo at sa iba.

Post by james on Sat Jun 29, 2013 6:17 pm

Salamat sir, akala ko di gagana. May itatanong pa sana ako kaso di man mag-online si maam mylene.

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Re: Mga DIY na kapakipakinabang sa inyo at sa iba.

Post by james on Mon Jul 01, 2013 12:31 pm

Crystal tester siguro sir meron ka?

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Re: Mga DIY na kapakipakinabang sa inyo at sa iba.

Post by ultrasonic™ on Mon Jul 01, 2013 7:54 pm

meron akng nyan... teka kalkalin ko muna  (^_^

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DIY CRYSTAL TESTER

Post by ultrasonic™ on Wed Jul 03, 2013 7:42 pm

eto na yun sis  oh...  eto gamit ko simple pero useful






meron din sa nuxie nyan



description:

This simple circuit will let you check if a crystal oscillator is working. Simply connect the crystal between the two labelled points, and connect 5V+ to the power connector. If the LED lights, then it shows the crystal is functioning correctly.








All of the components should be readily available, and the transistors can be changed to most compatible NPN transistors.

You can also view the crystal waveform on an oscilloscope by connecting a probe to either the base or emitter of transistor Q1.
The Eagle files for this project can be found here

source: http://www.nuxie1.com/guides/crystal-tester.html

pa ot: meron pa kong nakalkal sa baol pero bukas ba lang.. wala na kasi akong oras

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Re: Mga DIY na kapakipakinabang sa inyo at sa iba.

Post by james on Fri Jul 05, 2013 6:01 pm

Bilis naman talaga meron kaagad.  Rolling Eyes

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Turns Your Digital Voltmeter to Inductance Meter

Post by ultrasonic™ on Fri Jul 05, 2013 7:31 pm

Measuring inductance is important in making your hand-made inductors, especially when you do-it-yourself (DIY) your coil winding. An inductance meter adapter circuit would be helpful since you can measure inductance using your general purpose digital voltmeter (DVM). This circuit cost much cheaper compared to already made inductance meter instrument. Here is the scehamtic diagram of the circuit:








The circuit is very simple, containing only one voltage regulator chip and one NAND gates chip. This inductance meter adapter provide two measurement range, low range for measuring 3uH to 500uH  inductor values, and high range for 100uH to 5mH. Calibrating this inductance meter is easy. First you need to calibrate the zero offset. Connect your DVM to the output of this circuit, and select 200mV range for the DVM. Short the inductor measurement probe and adjust the sero calibration to give zero volt reading on your DVM.  To calibrate the low range, pick a known inductor around 400uH. Select 2V range for your DVM. Measure the inductor and adjust the low-cal pot to give 1mV per uH inductance. For example if you use a 390uH then you should adjust the low calibration pot to give 390mV reading on your DVM. To calibrate the high range, switch the range of the adapter circuit to high, and use it to measure a known inductor with values around 5 mH. Calibrate the high-cal pot to give 100mV reading per 1 mH inductance.











Turn DVM to Inductance Meter

Courtesy of Sis Coolet ng Elab
nakalkal ko lang sa baol nung nangalkal ako ng files abwt xtal tester

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Re: Mga DIY na kapakipakinabang sa inyo at sa iba.

Post by triac on Mon Jul 08, 2013 6:51 pm

ang dami na palang project dito nahuli na ako sa information.Sir ultra pwede bang ma e download to?napaka importante project to malaking tulong sa repair..

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Re: Mga DIY na kapakipakinabang sa inyo at sa iba.

Post by james on Sat Jul 13, 2013 6:37 pm

Darami pa iyan kapag nagcontribute ka sir.   cool

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Re: Mga DIY na kapakipakinabang sa inyo at sa iba.

Post by james on Wed Jul 17, 2013 9:59 pm

Dagdag na lang kayo mga sir ng mga gustong ninyo.
 
Medyo hindi mona ako madadalas dumaan dito.  bye

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Re: Mga DIY na kapakipakinabang sa inyo at sa iba.

Post by james on Sat Aug 24, 2013 9:20 pm

Napadaan lang mga sir at maam. Kumusta na kayo?

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Re: Mga DIY na kapakipakinabang sa inyo at sa iba.

Post by james on Thu Aug 29, 2013 7:14 pm

Sino pa magbabahagi ng pagkakaabalahan ko?  Very Happy

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Re: Mga DIY na kapakipakinabang sa inyo at sa iba.

Post by DJFEL on Mon Sep 09, 2013 10:20 pm

basa mona dito pang may time...

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Re: Mga DIY na kapakipakinabang sa inyo at sa iba.

Post by james on Thu Sep 12, 2013 2:36 pm

basa lang muna.

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Re: Mga DIY na kapakipakinabang sa inyo at sa iba.

Post by james on Fri Sep 13, 2013 6:25 pm

Sana dagdagan pa ito.

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DIY CRT REJUVENATOR/RESTORER

Post by ultrasonic™ on Fri Sep 13, 2013 6:50 pm

lipat na rin natin to dito


DIY CRT REJUVENATOR/RESTORER

for restoring defective weak CRT/Pixtube. subukan nyung buhayin ang mga nkatambak na tube lalo na ang mga lumang SONY 




Read more

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DIY Flyback TESTER

Post by ultrasonic™ on Fri Sep 13, 2013 6:56 pm

.

DIY Flyback TESTER

pagcheck ng flybak to... pwde mong macheck ang bawat secondary output nya using AC voltmeter..
ingat ng kunti sa Anode cap..  









Read more


Last edited by ultrasonic™ on Fri Sep 13, 2013 7:16 pm; edited 1 time in total

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Re: Mga DIY na kapakipakinabang sa inyo at sa iba.

Post by DJFEL on Fri Sep 13, 2013 7:10 pm

chik ko ky Capsighter Chinoks baka na tapos na yong pcb lay out nang FBT tester..

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Re: Mga DIY na kapakipakinabang sa inyo at sa iba.

Post by Electro on Sat Oct 12, 2013 3:12 pm


gaganda pala ng mga nandito master. meron din po ba tayo ng test light ng mga electrician?

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DIY CIRCUIT/VOLTAGE/AC TESTER

Post by ultrasonic™ on Wed Oct 16, 2013 6:11 pm

eto ba tinutukoy mo jeff...?






na iilaw kahit one line lang ang knabit? basta hinawakan lng ng kamay ang kabilang dulo, as long na may live wire



kng parang ganyan... circuit/voltage/ac tester ang nkagisnang tawag namin jan...
composed of 1 Neon bulb at 1 resistor na esi-series




lagyan nyu lng ng 110K - 220K ohm resist ay safe na yan....
at ofcourse proper Enclosure   (^_^


btw.... magandang gamitin ito sa pagrepair ng mga Christmas light, Fluorescent, 220 AC line & etc...

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Re: Mga DIY na kapakipakinabang sa inyo at sa iba.

Post by james on Thu Oct 17, 2013 9:16 pm

Dami ko talaga natutunan dito.

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Re: Mga DIY na kapakipakinabang sa inyo at sa iba.

Post by james on Wed Oct 23, 2013 7:20 pm

Sana post ni sir djfil yung protect circuit nya dito.

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Re: Mga DIY na kapakipakinabang sa inyo at sa iba.

Post by james on Tue Nov 19, 2013 8:40 pm

Dagdagan nyo naman ito please. santa

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Re: Mga DIY na kapakipakinabang sa inyo at sa iba.

Post by triac on Mon Jan 20, 2014 1:17 pm

ultrasonic™ wrote:eto na yun sis  oh...  eto gamit ko simple pero useful






meron din sa nuxie nyan



description:

This simple circuit will let you check if a crystal oscillator is working. Simply connect the crystal between the two labelled points, and connect 5V+ to the power connector. If the LED lights, then it shows the crystal is functioning correctly.








All of the components should be readily available, and the transistors can be changed to most compatible NPN transistors.

You can also view the crystal waveform on an oscilloscope by connecting a probe to either the base or emitter of transistor Q1.
The Eagle files for this project can be found here

source: http://www.nuxie1.com/guides/crystal-tester.html

pa ot: meron pa kong nakalkal sa baol pero bukas ba lang.. wala na kasi akong oras


sir ultra nakabuo na po ako nito yung gumagamit ng BC547.Ano po ang tamang pagamit nito?ano po ang sgn ng short,open,at good?salamat. Exclamation

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Re: Mga DIY na kapakipakinabang sa inyo at sa iba.

Post by danny on Mon Jan 20, 2014 4:31 pm

nice
thanks for sharing  Smile 

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Re: Mga DIY na kapakipakinabang sa inyo at sa iba.

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