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...


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


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.basics4 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


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 ...


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 ]-----...


Cockroft-Walton generator

Started by cloudguitar in sci.electronics.basics9 years ago 12 replies

Hi all, I am trying to build a simple half-wave CW generator (aka Villard cascade) for my Physics class. At the moment, I have 4 stages...

Hi all, I am trying to build a simple half-wave CW generator (aka Villard cascade) for my Physics class. At the moment, I have 4 stages composed of 1.5 nF capacitors (rated for 2kV) and diodes with an internal resistance of 500ohm, connected to a 12V 50 Hz AC supply. I simulated the circuit with Qucs and, as I was expecting from calculations, the no-load output would have been around ...


Multimeter and Signal Generator

Started by Anonymous in sci.electronics.basics2 years ago 5 replies

Hi, I am using the following multimeter http://www.repeater-builder.com/radio-shack/22-812/22-812-operating-manual-en.pdf My questions...

Hi, I am using the following multimeter http://www.repeater-builder.com/radio-shack/22-812/22-812-operating-manual-en.pdf My questions is that what is its input resistance or impedance of this meter? -------------------------------------------------------------------------------- I am also trying to find the output impedance of the following signal generator, page 12. I do not ...


Help Trying to Use D.C. Motor as Generator

Started by Techmann in sci.electronics.basics9 years ago 16 replies

I have a D.C. motor that spins just fine when I apply 12V to it. The motor has a 1/4" shaft and I would like to use it as a generator. When I...

I have a D.C. motor that spins just fine when I apply 12V to it. The motor has a 1/4" shaft and I would like to use it as a generator. When I hook up a DC voltmeter to the leads and spin the shaft in the same direction with my electric drill (around 1000 RPM) the most I see out of the motor is only .24 volts. I am puzzled why I am not seeing close to 12V output on this motor. Can only cer...


vandergraph generator

Started by trickyrick in sci.electronics.basics8 years ago 10 replies

My son and I have made one of those vander graph generator's There is a belt that carries a positive charge up to a metal ball. I want to...

My son and I have made one of those vander graph generator's There is a belt that carries a positive charge up to a metal ball. I want to increase the charge so I was wondering if i got myself one of those ion generators they can generate neg or pos you can get kits for around $15 Would that increase the static charge on the metal ball Thanks


Filtering generator output?

Started by Anonymous in sci.electronics.basics4 years ago 7 replies

I have a 4500 watt generator that is for emergency use. When it was new I checked the output with an oscilloscope just to see how pure the sine...

I have a 4500 watt generator that is for emergency use. When it was new I checked the output with an oscilloscope just to see how pure the sine wave was and how close to 60 Hz it was. Well, the main sine wave looked good and the frequency was very close to 60 Hz. It floated around a little as the load changed but then would stabilize very close to 60Hz. However, there were lots of other small...


Efficient Actuators for Alpha Stirling

Started by Bret Cahill in sci.electronics.basics5 months ago 4 replies

The goal is an Stirling w/o a mechanical crank/flywheel. Instead it'll have 2 electric actuators and a linear generator. Supposedly a linear...

The goal is an Stirling w/o a mechanical crank/flywheel. Instead it'll have 2 electric actuators and a linear generator. Supposedly a linear generator, a glorified shake light, can be 95% efficient. I need an actuator that is pretty efficient as well. The actuators need a to consume less than 100 watts and have a stroke of ~ 15 cm. Since it is only for demonstration purposes it is OK if...


High pitch sound generator

Started by sbl in sci.electronics.basics11 years ago 14 replies

Hi, I would like to build a home-made cat repeller, based on high pitch sound (18-19KHz and up) What's the simplest way to build such a...

Hi, I would like to build a home-made cat repeller, based on high pitch sound (18-19KHz and up) What's the simplest way to build such a sound generator? Thanks!


Question: Learning How To Use Hand Held Oscilloscope

Started by Chris L in sci.electronics.basics10 years ago 19 replies

Hello, I've been trying to learn how to use my new Protek 800 series hand held Digital Oscilloscope. So, I connected the single oscilloscope...

Hello, I've been trying to learn how to use my new Protek 800 series hand held Digital Oscilloscope. So, I connected the single oscilloscope probe to the output of a used function generator that I bought on EBay. On oscilloscope auto, what I see is a waveform that I can only describe as a repeating sinc function. When I increase the frequency of the sine wave on the generator, I see more...


signal generator circuit

Started by Anonymous in sci.electronics.basics11 years ago 12 replies

I'd like to make a circuit that is essentially a signal generator producing a 400 kHz signal. I think this can be done with a voltage source,...

I'd like to make a circuit that is essentially a signal generator producing a 400 kHz signal. I think this can be done with a voltage source, resistor, capacitor, and inductor in parallel. However, I'm not sure what values are appropriate for the resistor, capacitor, and inductor. Any help is appreciated. Thank you.


signal generator output

Started by Anonymous in sci.electronics.basics7 years ago 69 replies

OK, this is real basic but I'm not getting it. I hooked up my HP 8657A signal gerator into my TDS 210 oscope with RG 58a/u ,which is 50 ohm to...

OK, this is real basic but I'm not getting it. I hooked up my HP 8657A signal gerator into my TDS 210 oscope with RG 58a/u ,which is 50 ohm to match my input and output. The trouble is , the voltage readings on my scope do not match my output readings on the signal generator., sometimes off by a factor of 3 to 4. The scope is set for 1X probe . Why the hugh mismatch? thanks jk


Daqarta and Function generator

Started by Kari Laine in sci.electronics.basics8 years ago 20 replies

Hi, I am total beginner with electronics.... I am learning this Daqarta scope program (www.daqarta) and at the moment I am wondering the...

Hi, I am total beginner with electronics.... I am learning this Daqarta scope program (www.daqarta) and at the moment I am wondering the power output of function generator. I am planning to buy (when I have the money) two velleman applifiers K4004B - http://www.velleman.eu/distributor/products/view/?id=352782 I will configure them for mono. That should give me enough power. Problem ...