Sorry, but I don't have a diagram or photo of this setup. I designed a circuit that interfaces into the alternator to collapse the magnetic field of the system. It seems to have worked, just odd output results. I used a short circuit as a load to provide a high counter torque on the alternator...
The source per phase winding had a resistance of 0.7ohm. I tried to get a current reading with a clamp meter and it was showing zero amps. I thought the value of voltage across the load was current x resistance. I tried to measure the load voltage many times with different multimeters and they...
The resistance of the load is less than 0.0003 ohm. The voltage across the load is in excess of 100 volts. There is regulation for the field, it is supplied by a separate DC source.
I tested all the meters and the DC and AC voltage measurements are correct with the appropriate supply. The load I am using is basically a short circuit, It drops 99.95% of the power across the load. The frequency remains stable at 240Hz with no fluctuation.
I have a three phase alternator and I used a digital voltage meter across the output terminal and the reading went from OL to 4000 volts to 3000 volts and quickly decreased to zero volts, then went through the range again starting from OL. It continued to do this, I thought the meter could have...
The capacitance in the circuit is 500uF, the inductance of the circuit including the wires is 810.56uH and the resonant frequency is 250Hz. I measured the inductance of the wire to be 13.5uH with a MTP MS5300 inductance meter. The clamp meter I am using is good for frequency from 50Hz to 500Hz...
When calculating the capacitance for the circuit I did include the inductance of the wire. The resonate frequency is less than a kilohertz. I measured the circuit inductance with and inductance meter and the value dropped below the inductance of a single wire. I just wanted to be sure because...
In a series LC resonant circuit the capacitor acts to cancel out the inductance of the the circuit. With no inductance in the circuit the magnetic field will collapse. So my question is, with this collapse of the magnetic field will it be be harder to measure the current in the circuit with a...
I'm trying to calculate the power factor of a three phase synchronous generator
torque angle = arctan^-1 (impedance)
(sin torque angle/ current x voltage)
90 - torque angle - sin = XYZ
power factor is cosine XYZ
Is this the correct calculation to use?
When an ac generator produces high current the counter torque increases, but if voltage increases would the counter torque decrease? Is counter torque related to counter EMF?
Can a weak alternating magnetic field from one coil have an effect on another coil that has a stronger alternating magnetic field?
I ask this because I want to know if magnetic fields follow the same principal as coupling two different voltages together.
I need someone to clarify for me how an increase in torque angle in an ac generator increases the power factor. Does the torque from the rotor force the current in phase with the voltage on the stator.
Sorry but I'm more interested in the electrical side of it and less on the actual mechanical side of the operation. I have been trying to find info in the internet but so far not successful.
I'm trying to understand exactly how power plant generators increase power output. So I will explain what I think is right.
To increase the power output of a generator more torque from the prime mover is required to increase the torque angle between the voltage impressed on the stator from...
Is there a mathematical equation for calculating the load angle of a generator?
I'm trying to calculate the real and reactive power of the generator which the equation I am using is
EV/Xd sin delta
where E is the generator excitation voltage
V is the generator terminal voltage
Xd is the...
Do power plant generators regulate the output voltage the same way a car alternator regulates its output voltage. Or do power plant regulators control the output by regulating the rotation speed of the generator.
The transformer does not have a current rating on it but with the secondary winding connected in series with the 3 ohm resistor the voltage from the secondary is 17.66 volts AC at 0.385 amps AC.
What size of capacitor would I need to make this circuit work properly with a transformer that can...
The transformer voltage is 19 volts AC. On the output through the 3 ohm resistor the DC voltage from a bridge rectifier is 3.5 volts. From the voltage doubler it is 2 volts.
Just so that I understand with lower frequencies on the input to the voltage doubler the capacitor takes longer to...
The source I am using is 60 Hz AC power from a transformer. I have been using a Delon voltage doubler with 2200 Micro Farad capacitors. With the load being 3 ohms the voltage is half that of a bridge rectifier.
How can I double the voltage through a 3 ohm load with a voltage doubler when the output voltage usually collapses due to low load resistances. I have a feeling it is due to capacitance values and frequency. Can someone please explain.
When it comes to voltage doubler circuits, They produce double the output voltage but half the current. But when a voltage doubler output is put through a resistive load, the current through that load is equal to voltage divided by resistance. So how does the voltage doubler provide half of the...
Thanks for all the input, i do appreciate it. I don't have a variable DC voltage supply to compare the two voltages, I am limited in my electrical supplies. I do like the idea with using the current meter with the resistor to measure voltage since current x resistance equals voltage. And the...
I know there are voltmeters out there with really high internal resistance for measuring voltages with more accuracy. The problem is they are very expensive. The meter I am using, i believe only has one setting. It only has one setting for DC volts and one for AC volts. When i connect it to the...
I am try to measure the voltage from a high impedance source with a regular voltmeter with an input impedance of 10 mega ohm. But the voltage being measured is inaccurate. Is it possible to change the resistor value inside the voltmeter to 100 mega ohms to get a more accurate reading?
I have a source of 800 Kilo Ohms and I want to power an LED with that source. Which I would presume the LED would have a resistance of 9.5 to 10 Ohms if I'm correct. When I connect the LED to the source the voltage drops from 12 volts DC to around 1 volts DC. If my thinking is correct the reason...
Can you tell me if I'm right with this. If you charge ten 1F capacitors in series at 10 volts. Each capacitor has a voltage of 1 volt and a charged capacitance of 0.1F. So if you discharged the ten capacitors in parallel the output would be equal to 1F of capacitance charge and 1 volt. or would...
So how do you step up voltage with an audio transformer. wouldn't you have to have a larger impedance on the secondary winding compared to the primary.
So if I get this right, if I have a source impedance of 40K and a load of 50. I need a turn ratio of 1:28.28 to get the same power from the source to the load. So if I have 10 volts in from the source I would have 10 volts out. Is this right?
I have a question about impedance matching with transformers.
If I have a source impedance of 20 K ohms, to step up the voltage does the primary have to match 20K ohms with a secondary of 40K ohms for a step up of 1:2. Or can I change it so the primary is 50 Ohms with a secondary of 40K ohms...
My question is if you connect multiple transformers together with the secondaries in parallel, how do you calculate the sum current from the transformers. Is the current calculated by dividing the voltage on the secondary winding by the impedance of the secondary windings.
Or is it based on the...
Will an audio transformer pass multiple signals at the same time to the secondary winding. For example if there is 200Hz 300Hz and 1000Hz on the primary winding, will there be 200Hz 300Hz and 1000 Hz on the secondary. In my opinion it will but I just wanted to confirm this.
Is it possible to combine two AC signals that are slightly out of phase, but have the same frequency, voltage and current through an inductor, resistor series network.
The frequency I am trying to filter is 60Hz, My meter can read to 1 MHz. The meter measures the signal voltage and it gradually rises, but with the components I used I should have a higher current through the output. The calculations show an output current of 1.7 amps but I don't get any output...
I'm a bit confused here. To measure the output voltage, frequency and current I have to use an oscilloscope. Why won't a multimeter measure the signals voltage, frequency, and current properly.
I calculated a transfer function of .002. I measured the signal by having two different multi meters, one for ground and one for output. The voltage gradually increased, but I didn't get any current amplification.
Does an RL low pass and high pass filter need to have the same impedance in the circuit as to the source impedance to work properly. I put an inductor in series with the source with a resistor to ground as the low pass, and a resistor in series with the source with an inductor to ground as a...
How do you connect a variable capacitor to an inductor to make a series radio tuner?
And where do you tap the resonant frequency to send to the RF amplifier?
I'm having problems filtering out certain frequencies from others with a series LC filter. I have a 1.923 Henry DC filter choke inductor set in series with a 0.1 micro Farad capacitor. I send the signal through the inductor to the capacitor and output from the other side of the capacitor. I'm...
Tell me if I'm wrong with this , But I thought that if you had a supply current of 1 amp then a 1 Farad cap would work. And if you had a supply current of 3.3 micro amps a 3.3 micro Farad cap would work.
For a series LC circuit the Q I believe is Q= 1/R^(L/C). I have a 1.923 Henry inductor and a 4.4uF cap. The resistance in the inductor is 52.5 ohms. The answer I got was 111.86.
I know the circuit can't have a Q of that value. Where did I go wrong?