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Jerry
  • Male
  • Atlanta, GA
  • United States

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Jerry's Discussions

Romney Chooses Ryan as Vice Presidential Running Mate

Started Aug 11, 2012 0 Replies

Republican presidential candidate Mitt Romney said on Saturday he has chosen Congressman Paul Ryan as his vice presidential running mate, a move that will bring the debate over how to reduce…Continue

DC Voltage clipper - safeguard the measurement card.

Started this discussion. Last reply by Kimly Mar 19, 2012. 1 Reply

I have few DC voltages to be measured which are less than 10V.For measuring I'm using the data acquisition module which has the range of 0 to 10 V.In case at any situation if the DC voltages goes…Continue

Which of these represents components that generate a voltage?

Started this discussion. Last reply by Jerry Mar 16, 2012. 1 Reply

Which of these represents components that generate a voltage?I'm pretty sure its A only. Do you agree?Thanks for the help.…Continue

Calculate Current

Started this discussion. Last reply by Jerry Mar 15, 2012. 1 Reply

Hi... I just started embedde3d C at uni and the prelim work had this question... i dont remeber much from my first year at uni so would appreciate the help.... These are the 2 questions....How much…Continue

Tags: led, current

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Latest Activity

Jerry posted a status
"Job Fair Oct. 11, Check it out at http://www.facebook.com/recruitmilitary"
Oct 10, 2012
Jerry commented on Jerome Trent's blog post Jerome Trent Blog
"I know most of you have been introduced to Multisim by National Instruments.  This is a wonderful simulation program for electronic circuits.  The student version can be downloaded as a 30 day free trial at www.ni.com.  If you still…"
Sep 28, 2012
Jerry replied to Jerry James's discussion How to choose darligton pair?
"First off let’s not confuse people calling a darlington pair an IC.  A darlington pair could be two separate transistors configured as a darlington pair or it could be two transistors built into one package with only three pins, one each…"
Sep 28, 2012
Jerry replied to Zman's discussion Reverse Saturation Current in SI Diode
"As temperature increases electrons move more freely.  This would generally relate to higher current.  Since current flows more freely that means that the forward bias voltage to allow a given current would be reduced slightly. During…"
Sep 19, 2012
Jerry replied to Zman's discussion Overvoltaging a Relay
"The voltage rating of a relay is to tell you what voltage to use across the coil to operate the replay.  If it is designed to operate on 120vac, then you would probable damage it or burn it out using 230v.  This would be the voltage you…"
Sep 17, 2012
Jerry posted a video

Marx Generator Powered By One AA Battery

It is all real. I put together a little inverter which generates about 450v from an 1.5v source, then the voltage multiplier increases the voltage further to...
Sep 13, 2012
Jerry replied to Zman's discussion DC Causes Transformer to Wear out??why?
"I believe you are on the right track.  When you provide a signal to a transformer, it goes to the primary windings which is just an inductor.  One of the things that we know about inductors is that current lags the voltage.  So when…"
Aug 16, 2012
Jerry replied to Kimly's discussion How does a circuit work in a electron's or hole's world?
"Years ago, probably before you were born, electron flow was not well understood.  Needing to be able to deal with current in a circuit, they had to make a choice about which way the current was flowing.  The choice they made was that…"
Aug 14, 2012
Jerry posted a discussion

Romney Chooses Ryan as Vice Presidential Running Mate

Republican presidential candidate Mitt Romney said on Saturday he has chosen Congressman Paul Ryan as his vice presidential running mate, a move that will bring the debate over how to reduce government spending and debt to the forefront of the race for the White House.Read more on Newsmax.com: Romney Chooses Ryan as Vice Presidential Running Mate Important: Do You Support Pres. Obama's…See More
Aug 11, 2012
Jerry replied to Jerry James's discussion Measuring capacitance
"It appears that your question is 'Can you replace a capacitor with a larger value capacitor?'.  As a simple straight forward answer I would have to say NO.  However the answer would depend on what circuit your capacitor is…"
Aug 8, 2012
Jerry replied to Zman's discussion Operational amplifiers and diodes
"For your op amp, the output would hit the negative rail of -12 volts anytime the input is higher than 0.5 volts.  The rest of the time it would go to the positive rail of +12 volts.  It does this because you have a gain of about 30. …"
Jul 11, 2012
Jerry replied to Jerry James's discussion How to get Constant Current output using Constant Voltage Driver?
"Sounds to me like you are going to have to use 3 of the LT3956 constant current devices if you want to control each LED seperately."
Jul 11, 2012
Jerry replied to Zman's discussion Emitter Follower (common collector amp)
"In your first schematic, Figure 1, R1 and R2 are not necessary if you have picked appropriate values for V+, V- and RE.  The voltages and RE would determine the bias for the transistor.  If you were not able to provide appropriate voltages…"
Jun 7, 2012
Jerry replied to Jerry James's discussion Transistor Switch Application Circuit
"I have to take issue with golden rule #1 1) Collector must be more positive than the emitter This applies for an npn transistor but for a pnp transistor the collector would have to be more negative than the emitter.  So for now let’s just…"
Jun 6, 2012
Jerry liked Jerome Trent's blog post EVENTS
Jun 4, 2012
Jerry replied to Zman's discussion What is the advantage of 1N4001 over 1N4007
"If you are choosing a diode for a retifier in a power supply circuit, definately choose the 1N4007.  If, however, you are choosing a diode for a circuit in which the capacitance of the diode will be a factor then you will find that these two…"
Jun 4, 2012

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