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studyante
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« on: July 17, 2010, 05:14:17 PM » |
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gumagana po yung circuit na sinimulate ko na gumagamit ng tl084 pero nung iimpliment ko na siya sa breadboard, sobrang iba yung lumalabas sa output compared sa nasimulate ko sa simetrix. tinignan ko po yung datasheet ng tl084cn para macheck yung gma connections at tama naman yung mga ginawa ko. 5V at -5V po yung gamit ko na supply para sa tl084. anu po ba ang maaring maging sanhi nito?
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The Philippine Electronics and Technology Forum
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« on: July 17, 2010, 05:14:17 PM » |
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rdpzycho
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« Reply #1 on: July 17, 2010, 05:44:06 PM » |
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ano 'yung circuit?
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"Divide each difficulty into as many parts as is feasible and necessary to resolve it."
- Rene Descartes
"Keep on starting, and finishing will take care of itself."
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The Philippine Electronics and Technology Forum
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« Reply #1 on: July 17, 2010, 05:44:06 PM » |
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studyante
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« Reply #2 on: July 18, 2010, 12:28:57 PM » |
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eto po yung circuit. iniiba iba ko lang po yung mga values ng capacitor at resistors  |
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The Philippine Electronics and Technology Forum
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« Reply #2 on: July 18, 2010, 12:28:57 PM » |
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TinTopHack
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« Reply #3 on: July 22, 2010, 03:31:48 AM » |
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eto po yung circuit. iniiba iba ko lang po yung mga values ng capacitor at resistors Ilagay mo ang values ng original na circuit at yung values na ginagamit mo including the supply voltage you are using then we can help you. |
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The world, as everybody knows, is analog; unless, of course, it's digitized.
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studyante
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« Reply #4 on: July 27, 2010, 04:53:52 PM » |
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yung sa R1 at R2 po ay 10k
tapos sa Rt 1k
yung capacitor po ay 100nF
tapos yung supply po ay 5V at -5V
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akhen
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« Reply #5 on: July 27, 2010, 05:47:42 PM » |
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ano old values? or new values?
palagay ng old and new values for comparison...
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studyante
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« Reply #6 on: July 27, 2010, 06:07:42 PM » |
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kakalagay ko lang po nung mga values
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studyante
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« Reply #7 on: July 27, 2010, 10:50:25 PM » |
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eto po yung circuit na ginamit ko  eto po yung waveform niya.  |
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TinTopHack
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« Reply #8 on: July 31, 2010, 09:55:58 PM » |
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eto po yung circuit na ginamit ko eto po yung waveform niya. Di ko makita ang mga pictures/diagram na pinopost mo. Not sure kung ang problem sa browser ko or somewhere else. |
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The world, as everybody knows, is analog; unless, of course, it's digitized.
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TinTopHack
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« Reply #9 on: July 31, 2010, 10:46:41 PM » |
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OK solve na problema ko sa browser makita ko na posted pics. The waveform you are showing is correct. I assume ito ang galing sa simulation mo. Ano actual waveform mong nakuha? Di ba triangular? trapezoidal ba? Ano ang old values at ano ang new values mo?
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The world, as everybody knows, is analog; unless, of course, it's digitized.
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studyante
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« Reply #10 on: August 04, 2010, 09:17:51 AM » |
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the waveform i observed was a decaying sine wave with around 30mV amplitude and in the Mhz range. I assumed it was just noise. I consulted datasheets and i think my setup and connections were correct. I do not know the cause of this problem..
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TinTopHack
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« Reply #11 on: August 14, 2010, 02:20:32 AM » |
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the waveform i observed was a decaying sine wave with around 30mV amplitude and in the Mhz range. I assumed it was just noise. I consulted datasheets and i think my setup and connections were correct. I do not know the cause of this problem..
Your circuit is not oscillating the way it should. It will help if you tell us the old values and the new values. |
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The world, as everybody knows, is analog; unless, of course, it's digitized.
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TinTopHack
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« Reply #12 on: August 14, 2010, 10:37:37 PM » |
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Ok my friend let us do it this way - mukhang matagal na to at marami kanang tinanong na tao. Pls note this "static" method of troubleshooting is different because it will let you slow down the operation of your circuit so that you can see what is going on in slow motion. Pls see your circuit below with the values you have given but modified so that the desired effect I described can be seen. Adding a switch will allow you to control when and how the integrator (the op amp with cap) operates and how the comparator (the other opamp) reacts to the output of the integrator. Kung wala kang switch you can use a jumper.  So setup your circuit as shown then power up and have your voltmeter ready. First set the switch to +5V. Measure the voltages at Point A, B and C. Then set the switch to -5V. Measure the voltages at Point A, B and C. Record them on the table provided then post them here. From the values you get, we will know what is going on then we will decide what the next move is. -TTH |
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The world, as everybody knows, is analog; unless, of course, it's digitized.
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The Philippine Electronics and Technology Forum
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June 11, 2009, 12:47:47 AM
