Small generator update & more ques.

Started by Eric R Snow in sci.electronics.basics11 years ago 7 replies

Greetings All, Thanks to who responded with answers to my last generator questions. I finally just now got the time to check things. I also have...

Greetings All, Thanks to who responded with answers to my last generator questions. I finally just now got the time to check things. I also have a new generator that I 'scoped this morning. The small generator now puts out 60 cycles after adjusting the governor. Both generators have a waveform that looks jagged. I think these must be harmonics after reading about them last night. Both genera...


Help with Scope & Function Generator Snafu

Started by jalb...@bsu.edu in sci.electronics.basics9 years ago 5 replies

I am trying to do a simple experiment involving an ocilliscope and a function generator in the same circuit. My plane is to have the function...

I am trying to do a simple experiment involving an ocilliscope and a function generator in the same circuit. My plane is to have the function generator set to produce a 10V (no load) sine wave an vary the freq from 100-2700 Hz. A .1 uf capactictor and a 1K resistor are connected in series across the output leads of the function generator. I want to connect the ocilliscope leads across th...


pll error in rf signal generator

Started by sperelat in sci.electronics.basics10 years ago 1 reply

What I;m doing now is doing test of a rf signal generator. My professor might buy it via e-bay. When I turned it on, it showed Uncal...

What I;m doing now is doing test of a rf signal generator. My professor might buy it via e-bay. When I turned it on, it showed Uncal warning and generated no rf signal. Meaning of error code was that PLL is unlocked. I'm ,however, newcomer to RF generator world. .. What does "PLL unlocked " means for RF signal generator. The model I'm doing test is fluek 6...


Vpp different from signal generator and scope

Started by Anonymous in sci.electronics.basics10 years ago 6 replies

I have something simple but I can't seem to find an answer to it. I am getting a different Vpp measurement on the scope from the...

I have something simple but I can't seem to find an answer to it. I am getting a different Vpp measurement on the scope from the signal generator. When put in a 1Vpp 200KHz square wave from my signal generator, while the frequency is dead on at 200KHz, I got a reading of 2 Vpp on the scope. I made sure the signal generator is outputting Vpp, not RMS. My scope is on DC Coupling. Does anyo...


Portable Generator questions

Started by Eric R Snow in sci.electronics.basics11 years ago 27 replies

Greetungs All, I have a small generator (700 watt, 850 surge) that I use to keep the fridge running when the power is out. It is a robust unit...

Greetungs All, I have a small generator (700 watt, 850 surge) that I use to keep the fridge running when the power is out. It is a robust unit made by Robin and is at least 20 years old. It has an accurate analog voltmeter on it. I tested it by comparing to a digital meter and by directly connecting just the meter to the 115 volt, 60 Hz mains. The label says that the generator puts out 60 Hz...


pulsing leds

Started by Anonymous in sci.electronics.basics9 years ago 7 replies

Is there a upper limit as to how fast you can pulse an led say a ordinary red led 2v v forward,20mA current. I'm try to drive it with a signal...

Is there a upper limit as to how fast you can pulse an led say a ordinary red led 2v v forward,20mA current. I'm try to drive it with a signal generator,and pick up the flashes with a sensor..I went through the book that came with my generator and there isn't a word in there about a maximum current caution with the generator I'm using a current resistor but don't know if I'm exceeding the max...


Can you make a dynamometer from a partciular kind of motor/generator?

Started by Richard in sci.electronics.basics9 years ago 7 replies

I suppose if you couple a motor to a generator and load the generator, that will load the motor so the generator could be used to make a...

I suppose if you couple a motor to a generator and load the generator, that will load the motor so the generator could be used to make a dynamometer?


Amplifier for frequency generator

Started by Goran in sci.electronics.basics4 years ago 14 replies

Hi. Im making one simple mcu based device that will work as electronic repellent. Nothing special. Only difference is that i want to check...

Hi. Im making one simple mcu based device that will work as electronic repellent. Nothing special. Only difference is that i want to check other frequency ranges and to do so, i have to connect my device to function generator ( 0 - 4 MHZ ). Does someone knows how to build amplifier for this function generator ?


4017A function generator -Finding resistance values

Started by Brigitte Gaudet in sci.electronics.basics6 years ago 12 replies

Hello, My 4017A function generator just died on me today. I opened it up and saw two badly burnt resistors. I would like to replace them but I...

Hello, My 4017A function generator just died on me today. I opened it up and saw two badly burnt resistors. I would like to replace them but I do not know their values. How can I get the schematic for the 4017A function generator? or anybody has this model and can tell me their values? R624 and R148. thank you for your help. ken


Grounding between function generator and ADC

Started by jrenfree in sci.electronics.basics9 years ago 1 reply

Hi all, I'm having some issues with a generated signal from an HP function generator, and I believe the problem may be a grounding...

Hi all, I'm having some issues with a generated signal from an HP function generator, and I believe the problem may be a grounding problem. Basically, I'm emitting a signal with an HP function generator and receiving that signal with a Nation Instruments 6070E DAQPad. The signal I'm sending out is a simple sine wave, , but for some reason, when the chirp is complete, the function generato...


how to turn a universal motor into a generator

Started by gearhead in sci.electronics.basics10 years ago 4 replies

I took apart an old vacuum cleaner with 12 amp motor, made for U.S. 60 Hz AC household use so I could experiment with turning the...

I took apart an old vacuum cleaner with 12 amp motor, made for U.S. 60 Hz AC household use so I could experiment with turning the universal motor into a generator. I know it's a universal motor because applying 12 volts from a battery will get the motor to turn, same direction regardless of battery polarity. I wanted to experiment with it as a generator, so I used an electric hand drill to ...


Op-Amp Sawtooth Generator

Started by Patrick Chung in sci.electronics.basics3 years ago

Op-Amp Sawtooth Generator is unavoidable part of PWM modulators and so part of analog control circuits. Now it can be...

Op-Amp Sawtooth Generator is unavoidable part of PWM modulators and so part of analog control circuits. Now it can be simulated: http://www.cirvirlab.com/simulation/op-amp_sawtooth_generator_miller_integrator_simulation.php Also read the theory of operation: http://www.cirvirlab.com/index.php/tutorials/135-op-amp-sawtooth-generator-miller-integrator.htm l


< homemade wind generator

Started by LivingOfftheGrid in sci.electronics.basics10 years ago 6 replies

We recently built our own wind generator to power our off the grid home. Thought you might like to see the photos. ...

We recently built our own wind generator to power our off the grid home. Thought you might like to see the photos. www.off-grid-living.com/node/80


Does anyone know how I can make a small motion powered electric generator ?

Started by katrina in sci.electronics.basics9 years ago 13 replies

Hi all, I want to hook up a motion powered generator to my stationary bike that will supply electricity to my television ? How would I...

Hi all, I want to hook up a motion powered generator to my stationary bike that will supply electricity to my television ? How would I go about this ? thanks.. katrina.traviesa69@gmail.com


Simple circuit to convert Bi-polar Square wave to Unipolar

Started by rylmp2k1 in sci.electronics.basics8 years ago 8 replies

Hi everyone. I want to convert my square wave signal generator to produce only a positive going waveform without just chopping off the -ve...

Hi everyone. I want to convert my square wave signal generator to produce only a positive going waveform without just chopping off the -ve signal. The signal generator has variable output from 0-10V (20Vpeaktopeak or -10V to +10V)). I came up with a simple circuit that nearly works: The hot output of the signal generator goes to the cathode of a diode, the anode connects to the -ve of...


Aldi 59 petrol generator and television

Started by D. T. Green in sci.electronics.basics5 years ago 73 replies

On just buying a 800 watt 'two' stroke petrol generator from Aldi, we have heard from someone who says that he has got one; and that his is...

On just buying a 800 watt 'two' stroke petrol generator from Aldi, we have heard from someone who says that he has got one; and that his is running very roughly, and is really noisy. Also it says in the instructions that it is *not* suitable for connecting to televisions or other sensitive electronic equipment. Has anybody any experience with one of these very cheap generators ? (Only ...


power filters

Started by CptDondo in sci.electronics.basics10 years ago 26 replies

I've got a PLC (a little controller) that runs off a generator. The PLC keeps locking up; we suspect it's due to spikes from the...

I've got a PLC (a little controller) that runs off a generator. The PLC keeps locking up; we suspect it's due to spikes from the generator. The PLC only draws a tiny amount of power - less than an amp at 120vac. Is there an inexpensive filter we can get or build for this thing? Thanks, --Yan


PC Audio Generator

Started by PinkFloyd43 in sci.electronics.basics9 years ago 1 reply

Building a AM/FM Radio kit and you test each section after construction, so far I have not screwed up, now I am at the part where I need to...

Building a AM/FM Radio kit and you test each section after construction, so far I have not screwed up, now I am at the part where I need to use a 'audio generator' and introduce a signal into the board. As I don't have this piece of equipment found one on the net which will allow me to create the tone at the frequency required (400HZ), I can attach a cable to the 'output' or 'headphone' jack...


ethernet card as a square wave generator???

Started by tiger in sci.electronics.basics9 years ago 3 replies

I have 2 questions. I have 1Gbps ethernet card. (1)If i can rewrite ethernet device driver for OS, can i use the ethernet card as square...

I have 2 questions. I have 1Gbps ethernet card. (1)If i can rewrite ethernet device driver for OS, can i use the ethernet card as square waveform generator(signal generator)??? (2)If it is possible, How fast can i send square waveform? I mean what frequency? I know "1Gbps" do not actually mean "1Ghz". then 1Gbps card has maximum what frequency?


Hendershot Generator

Started by GM Forsythe in sci.electronics.basics4 years ago 6 replies

I've received an ad for plans for a Hendershot generator, claiming that it will produce power sufficient to run an entire house for virtually...

I've received an ad for plans for a Hendershot generator, claiming that it will produce power sufficient to run an entire house for virtually nothing. I find this hard to believe, but I'm not current in my understanding of the physics of this device. Can someone here explain how this works and explore the possibility of using it to power a household? -- +---------[ SERVER SIGNATURE ]-----...