Questions tagged [switching]
Switching can be defined as the change in state whether it be an analog, digital, or mechanical device. For digital devices, switching can be defined as a transition from HIGH to LOW or vice versa. For analog devices, switching can be defined as a change of operation within a transistor. Mechanical device examples include physical light switches or button switches. Ultimately, switching interrupts current from going into another conductor path.
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Ambient light sensor
I'm trying to design a simple ambient light sensor, but I need it to have adjustable sensitivity. I found this little example, but I was just curious if making it adjustable would be as simple as ...
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Made my first PCB! Does not work at all. Would like some advice
As the title says I made my first PCB. I am a physicist and have no training in design and wanted to try my best. I unfortunately made the rash choice of ordering them as they worked in simulation, ...
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100m simple on/off switch (long distance), how to simulate
I have a microcontroller and 100m away is a switch for simple on/off purposes. No data communication whatsoever.
An example from falstad:
I have implemented this situation in real life. However, ...
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Does this really apply to ZVS or ZCS? So which one is it?
I came across this problem: Author Ned Mohan mentions in his book "Power Electronics A FIRST COURSE" (chapter 10.3.1 ZeroVoltSwitching) regarding ZVS and ZCS, and says that switching off ...
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Microcontroller long cable switch signal
I have the following pcb setup for which I try to hook up a switch over a 100m cable (two ways).
I am currently pulling up the signal to 3.3V and making a ground closing switch but I am afraid that ...
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Switching High Voltages Using Low Voltage Devices - Troubleshooting [closed]
In electric vehicles, I need to cutoff a wire which carries 72V. This is higher than 12/24 VDC. Hence, a 12/24 VDC 5-pin relay cannot be used as a switch to cutoff the wire. However, I thought to ...
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Is this a reasonable way to use a logic level signal to switch a load with a larger power supply?
I am trying to switch 9 V to a load with a logic level signal from a microcontroller. The microcontroller has a separate voltage source from the 9 V. I am not sure where I should put a flyback diode ...
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Generating 520 Vpp (–130 V to +390 V), 1 MHz, 33% duty-cycle waveform into a small capacitive load using GaN [closed]
I’m working on a high-voltage, high-speed switching application and I’m looking for advice on the best way to generate the following waveform.
I need to generate a ~520 Vpp waveform at 1 MHz with a 33%...
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LTC7000A not switching at lower voltages
LTC7000A datasheet suggests that it works for the wide input range of 3.5V to 135V Vin. But in my application, I am facing an issue with the MOSFET switching at lower voltages. In my design I have ...
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Signal on/off from MC is analog or digital signal?
Maybe it's very dumb question. But I'm just curious. For example I have On/Off switcher for some LED for indicate that you can start using some device. So this LED turning On from MC and signal rising ...
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What is the best way to stack another switch?
I have a soft PCB with a tiny switch on top of which I want to add another switch (a mosfet).
What would be a good practice to do so? Just solder threads (hypothetical, in blue in the picture) ...
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Diodes for high power switching circuits - peak forward current specs? [closed]
I am designing an electrical discharge machining arc generator circuit. It uses power MOSFETS and power diodes (600 volt/30 amps regime). I am making extensive use of QSPICE for simulation (great ...
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Why are p-type MOSFETs used for high-side switching while n-type are used for low side? TO-220 package seems backwards
Disclaimer: Sorry for my ignorance - I'm a computer scientist but not an electrical engineer.
It seems at first glance that this designation should be the other way around.
N-type MOSFETs have the ...
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SPDT switch as low current power management
I have an application where I need a gate of somekind for both switching a higher current than my MCU I/O allows(5mA) and to prevent current leakage from said MCU pin (My application is at around ...
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Voltage Spikes with PWM Controlled Brushed Motor
I have disassembled a 20V cordless drill. It uses a two-lead brushed motor controlled via a PWM signal. Out of curiosity I connected both motor leads to an oscilloscope and measured both against a ...
