Questions tagged [frequency]
How many times something happens per second, measured in Hz (hertz).
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Oro 433.92Mhz TPMS needs receiver
Hello, the specs of this if i read correctly the ORO W401 sensors transmit at 433.92Mhz, i have broken the receiver and a replacement/repair seems unlikely. I would like to avoid the cost of removing ...
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Command to Several Slave using a Frequency Generator Master
I am generating varaiable Frequency and duty cycle PWM pulse using a master STM32F103C8T6 on PB4 pin (TIM3_CH1). The following shows my code:
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3-way Linkwitz Riley isolator adjustable high and low bands
I was wondering how I could adjust this circuit found here as "3-Way Mono LR Crossover" by Rod Elliot at Elliott Sound Products:
https://sound-au.com/project09.htm
to have adjustable high ...
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Frequency over RS485 with power
I have two devices: master and slave. The master powers the slave with +24 V for 1 second and -24 V for 1 second and it repeats, this is a simple way of master asking the slave to work in one of two ...
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Is this a good way to switch frequencies?
This is part of a bigger circuit where I have two frequencies coming from U1 and U2.
Sometimes I want U1 to go to U3 and sometimes U2 to go to U3. I have used a transistor pair to hopefully enable ...
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Confusion about Band Pass and Low Pass Filter for Synthesizer's Resonance
I am working on a bandpass/lowpass filter for a synth I am building base around the LM13700. The goal of the filter is to be able to control the cutoff frequency with one potentiometer and control the ...
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What RF connector is this?
I need help finding the PN for these Mating RF connectors. What manufacturer is it and what is the PN?
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Interpreting results of spectrum analyzer in Simulink for the following problem
I have the following setup:
In this question I'm supposed to present and explain the spectrum results of for different sampling times (t_s = 0.1, 0.25, 0.5, 0.7, 1 sec), so I created five different ...
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JFET Frequency Response Problem
Dear friends please help me to sorts this out.
I have attempted to design a simple CS type amplifier for 27 MHz based on 2N5486 JFET. Pretty soon I realized that the 15 pF of input capacitance of my ...
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Match Frequencies of Two Oscillators without Phase Matching?
I'm attempting to match the frequencies of two 555 timer oscillators, by using digital potentiometers to fine-tune the charging & discharging resistors on one of the oscillators to match it's ...
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DC square high frequency to AC square high frequency
I don't know an easy way to do this with transistors. I have a digital square signal 40kHz (0-3.3), and I need transform that to an AC square signal 40kHz (-10 10 v), but it must not change the phase ...
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How did I arrive at two different inductor values when calculating this RLC circuit?
I was working on this question and was wondering if anyone can help me understand why the following equivalent values of inductors are different between the two methods I used (labeled A and B).
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How to select a switching frequency for MOSFETs in a traction inverter?
When designing an inverter from scratch, what factors should be considered in selecting the switching frequency?
Specifically asking for: 20kW - 40kW traction inverters for motor control using SiC ...
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Dual Channel RF Synthesizer with Frequency Sync Capability
I have an application involving modulation/demodulation with a 20-40 MHz frequency that I need to apply in two places with controlled phase offset. I usually do this with something like the Rigol ...
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Why I get this output in the guitar tuner circuit I'm trying to make? (frequency to voltage converter)
I'm trying to design a guitar tuner. I made a Schmitt trigger to get a square wave, then connected it to a monostable multivibrator to generate a PWM signal. By using RC filter I should get clean ...
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