Frequency Multiplier Puns

I have a bunch of high voltage capacitors and diodes to make a CW voltage multiplier. I am encountering problems with ZVS circuits and and flyback transformers. The ZVS drivers keep blowing up. I was wondering if I could use an old 60hz NST to drive this multiplier circuit. I’m not sure how much frequency affects the performance of it.

I also have the newer high frequency NSTs but I would have to play with their protection circuits because those can be problematic. They are worth a shot too though.

I was trying to create a frequency divider circuit with a quad d flip flop, but I switched over a connection and it spit out an octave higher than the original source square wave. How is this possible? Is it just accentuating a harmonic of the square wave?

Crystal math!

Hi, I have a problem. My CPU is overclocked to 4GHz, using only the multiplier, which is maxed out to 40. Base clock was not changed, so it is 100 MHz. Now I want to OC the CPU to more than 4 GHz, but the multiplier is maxed out and if I change the base clock even a little bit, the PC crashes or won't even start. I tried adding to base speed that the final frequency would be 4.1 GHz and I rised the voltage a little bit, the PC wouldn't start, so I went back to 4 GHz, so now I can not overclock it to more than 4 GHz and I would really like to. Thanks for any help.

My specs:

CPU: i5 3570k; CPU Cooler: ARCTIC Freezer 7 Pro Rev.2; GPU: GTX 1060 6GB; RAM: Corsair Vengeance 2x8 GB DDR3; Motherboard: GIGABYTE Z77-D3H; PSU: Seasonic S12II 620W;

I'm setting NB frequency multiplier from x11 2200mhz to x13 2600mhz, and even when setting voltage to 1.3 manually, when I go back into bios it's 1.4.

Is this a safe voltage? 970m Pro3 motherboard and fx 6200 cpu

I have a 4790k overclocked to 4.7 Ghz that is basically 100% stable. However, I keep experiencing a weird behavior where the CPU will clock itself up to insanely high frequencies. I've included a picture to show what it looks like Link. These spikes happen infrequently but when they do, the whole system becomes laggy and unresponsive, even when the clock returns to normal. I've tried everything I can think of to fix it/diagnose the problem but I'm out of ideas.

Does anyone have idea why this is happening or what I could do to fix it? Any help would be appreciated.

EDIT If anyone stumbles upon this thread, I think the issue is my Gigabyte motherboard. If you manually set the BCLK, it enables the Speed Spectrum feature, which cannot be disabled, only turned down. I think it is the Speed Spectrum feature that is causing the BCLK to run haywire. I have tested this with 3 official BIOS version (F8, F9, F10b) and one custom BIOS (F10 final from tweaktown). I had originally set the BCLK to 100.10 so I could have round number frequencies - my CPU clocks to 4.689 GHz at x47 gear ratio, which is super annoying. So to wrap it all up, don't manually change your BCLK value on Gigabyte Z87 motherboards and you will be fine.

Build list:

PCPartPicker part list / Price breakdown by merchant

I would like to know how to force my CPU to run at a constant frequency and voltage where the multiplier doesn't fluctuate at all. I've tried disabling Intel speed step in the bios but that did not work. The multiplier would still bounce around. I want it to be firm.

This is a used item, and want to make sure it is not faulty. Could this be a sign that it is bad? I understand that it is designed to jump per demand but there is very little happening, all apps closed except the few shown.

Animated gif: https://imgur.com/a/5NNUOY7

Is there a reason to increase the multiplier than the base frequency? I've done both, and had people argue that I would be better off (more stable) with the stock frequency and an increased multiplier.

I don't think it matters but the cpu I was overclocking was a phenom iix4 955 and the cpu I will be overclockign is a 8370e.

Hi /r/askelectronics,

I'm planning a project that involves taking an existing PWM signal and possibly multiplying the frequency by a factor of 100 and retaining the duty cycle.

Here is the project: My vehicle (6.5L Chevrolet turbo-diesel, OBD1) uses a 33hz PWM signal to modulate a pneumatic valve that varies vacuum to a wastegate actuator to control boost pressures from the turbocharger.

I'm planning a turbo upgrade to a Garrett GT3782VA which uses hydraulic pressure (from main oil supply) to actuate the variable geometry portion of the turbocharger. It is controlled by a solenoid which is operated by a PWM signal of 3.3khz, and I have duty cycle maps for the desired vane positions.

My thought is, the variable geometry aspect replaces traditional wastegates as a method of boost pressure control, and if I can multiply the original 33hz boost solenoid signal to the suggested 3.3khz while maintaining the desired duty cycle then I should be able to control the new turbochargers vanes using the stock engine computer and remapping the boost/duty cycle for the new turbo.

tldr? How would one multiply a 33hz PWM signal to 3.3khz and retain the duty cycle?

Here is the circuit

Here is my circuit hope that Zener is not that relevant

Circuit works I hear blank sound in 100 MHz in radio but I have no idea how the circuit works and where the output comes from is it the emitter not sure of the transistor help ? 25 MHz crystal from a old network card and transistor is BC547B

I know that j represents energy storage either by in an electrical or magnetic field, but when time derivatives are taken of a sinusoidal expression with imaginary powers what exactly does that physically represent.

So I’m trying to build my own radio frequency counter because why not. I found some projects online that used an Atmega328 and a 74LV8154 to achieve this but the detail in the process was not enough for me to grasp how the calculations are being performed and what exactly is being counted.

I set up the 74LV8154 with an approximately 2hz clock pulse from a 555timer circuit, which drives clock A and B and I have RCOA connected to CLKBEN to put the counter into 32 bit mode, and attached leds the outputs so I could visualize what is going on better. Still confused. Especially since I can only see 8 bits at a time since the counter only has 8 outputs. I did this part just to try to get a better understanding of what calculations I need to do in my code.

Any help explaining this to me , along with how Frequency division and multiplication works with these chips or in code would be greatly appreciated. Until then I will continue to do my own research until hopefully something starts to make sense.

Edit: I’ve attached a link to the Datasheet SN74LV8154

I have been trying to use the below formula;

=SUMPRODUCT(--(FREQUENCY(IDcolumn, IDcolumn)>0),--(FREQUENCY(MDateColumn, MDateColumn)>=@TragetDate), Valuecolumn)

The object is to try and sum the value column where the ID is unique and the date is after the target date. Table below is an example of the data;

Table for the output

The issue I am having is that the first frequency seems to be adding another value at the end of the array. So for example if using f9 for the output while highlighting the formula bar it will look like the below;

=SUMPRODUCT({1;0;0;0},{1;1;0}, {32;32;5})

Because of the added value at the end of the array it causes the sumproduct to error, any chance anyone has encountered this before or has a solution?

( I tried to use frequency to on the date column to try and reproduce the extra array to try and solve the issue however it does not behave the same :S)

Currently with weapons like colo sword the inspired buff can really mess with how you aim with the item, making you always have to constantly adjust your aim instead of just gaining more range. If the frequency of projectiles with amplitude was also multiplied by 1.25x you would no longer need to readjust your entire aim each time, and would still be getting extra range.

I have acceleration data on frequency domain. I'm Integrating portion of it to get the area, so thats why it's acceleration (m/s^2) multiplied by frequency (Hz). Also I'm interested what happens to the unit if i take square root of this integral. I'm pretty bad at math actually so I don't really know if this makes a lot of sense to do this. I came up with this because I'm trying to come up with my own key figures from this vibration data that I have.

This question has been asked online couple of times, but I have some doubts.

I'm fairly new to filtering etc. but I get why convolving with sinc in the time domain is the same as multiplying in the frequency domain with the rectangular function.

And for a while I thought bandpass, bandstop were implemented using multiplication in the frequency domain directly. However, that's not so.

What I've gathered in a simple manner is that non-integer periodic content in the original signal won't be cancelled since it is not represented in the frequency domain exactly. Is that right? If not could someone ELI5 this answer?

Thanks a lot!

Why did they multiply two doppler frequencies to get the answer here? Confusion

https://preview.redd.it/uhu920kp7qj61.png?width=409&format=png&auto=webp&s=947ec738d8ae29ddf34b0d03ba0dda854303474f

https://preview.redd.it/ypj6lygq7qj61.png?width=400&format=png&auto=webp&s=40f0b3bca980559c4e0235d47981376543d7e172

https://preview.redd.it/h3v2wqdr7qj61.png?width=670&format=png&auto=webp&s=eef1013cd94e3c300d2a117f0b3d036475e161f8