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It is your video so you should know! In truth, yes it will work but it will be very inefficient and the LED lamp will not light at full brightness. First problem: Stepping the voltage up by 145 times also steps the current up by that amount, example for a 6W LED lamp, the current from the battery would have to be around 5 Amps for it to reach ful
Hello, I'm new to the forum but hopefully you guys will give me some great advice. I have been programming microcontrollers for the past five years, only as a hobby but I do plan to move to this as my career, I am currently a machinist but I don't quite have the means for university yet. I'm 27, so should still be capable of learning :razz:
Hi, It seems you are not an experienced PCB layouter .... if so, then good luck. 1) No! This is not a DC circuit. There are high speed signals. --> On each pin of each IC you should place a fast ceramics capacitor with very low impedance to GND. .. plus at least one big bulk capacitor. For this you need a very solid GND plane[/U
Hello! I have not used an oscilloscope since school, 20 years ago. I got a Kikusui cos2020 from a friend without any probes. Would be fun to use and learn with. But which probes should I buy? I was think about geting some cheap ones, but don't know if it's the right ones. P6060 probes from ali: Specificatio
you may have made a mistake in converting to the SMD board The arbitrary component placement in the schematic makes it hard to read. I would need to reorder the circuit in a functional way. At least one detail seems wrong, Q1 in parallel to a transformer winding. I guess TR1 should have two separated primary windings. Apart fr
How to build up nonlinear model of a FET in Foundry pdk? I use ADS. I meant to research some FET nonlinear parameters variation with Foundry process and design , such as Cgs and Cgd. I have pdk of the Foundry, and I can find the FET nonlinear large signal model. Would you plz tell me how to build up my own nonlinear model of a FET in Foundry
PS: I wonder if it has some self-oscillation from the FD response? - - - Updated - - - Hi, The following is the circuit. I guess it should be enough to estimate from the response.
Every coil has a SRF (self resonant frequency) but you may not like where it is. Usually people try to stay below SRF when they care about inductance as a value. A low frequency self resonant coil needs high inter-turn capacitance which may be unlikely. You could of course put high-Q capacitor across the entire length, or distribute caps along t
Hi this is my attempt to create a cheap but effective 1-60MHz measurement marker generator and simple tracking generator for a Tektronix 491 vintage spectrum analyzer. The nominal levels of the input of the analyzer are shown in the right. calibration, a must for old machines, should be of no importance with my plugin, since the DDS generated mar
Consider that the derivative (slope) of sin is cos and the derivative of cos is sin. Thus you can increment one by a value proportional to the other and you get a self-oscillating output that's a very good (not perfect) sin wave. The specific code you're questioning is just a power of 2 divide. FvM posted a better way to do this. The more you
Hi, I am designing a 12 bit SAR ADC, for that I need to select minimum unit capacitor for the DAC, And I am using sqrt(KT/C)< LSB/2 formula to calculate the capacitor value. The obtained capacitor value minimises the thermal noise impact, what about the other parameters like mismatch etc. and how they affects the capacitor value? How to select t
if touching the input with the tip of whatever, the amplifier oscillates it is likely being not self oscillation as you think, but rather a bare injection of EMI ( e.g , from mains ) through your fingers.
Not sure what alexanealessia is on about. I've been using Sonoff modules as self-powered WiFi switches for some time and they seem quite reliable. They switch the AC 'live' side from AC source to the output terminal and carry neutral through unswitched. With some track cutting it should be possible to isolate the relay contacts for other uses. Th
Alright, so your half-mode data is not self-consistent: the S-parameters clearly indicate that the cutoff frequency is around 5 GHz, but the Beta plot is showing that you have a cutoff around 10 GHz. Quite possibly it's a simulation error in the wave port: sometimes they will solve for one mode at the convergence frequency, but another will be exc
156327 The camera is 3 meters away from the playground. How do I get the actual distance between the balls?
At some universities this learning is a two year master degree process.. During centuries there is a long list of self-taught scientists (da Vinci, Edison, Tesla, Heaviside, etc.) but is very hard to catch them...
Up to 500 mA can be requested in the device descriptor. The disadvantage is that devices with > 100 mA power requirement are possibly not supported by a bus powered hub. Hosts and self powered hubs should support it.
I am trying to do some free space calibration to extract material data from unknown arbitrary material. I am struggling with the calibration part as the s parameters i am getting is not good enough to get proper value. Can anybody please suggest the calibration procedure? I have E8361 keysight VNA. I have Type N short, open, load, through (...)
For the impedance deviation, I think that this is due to the phase shift or phase difference between EM simulation and measurement. You just answered yourself to your initial question...
When I hear 400V capacitor bank I think PFC. But maybe that's not what they were asking. When it comes to inrush limiting a PTC is ideal if there is a relay to switch it out. If the relay fails it self protects (removing the need for a protection fuse). And it's specified for joules (good luck finding joule ratings for resistors). https://w