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OK let's take a look at the AO3422 datasheet
All I see there is Maximum Junction-to-Ambient Typ 115 max 150 C/W.
and in the notes:
The value of R θJA is measured with the device mounted on 1in 2 FR-4 board with 2oz. Copper, in a still air environment with T A =25°C. The
value in any given...
I want to use NMOSFET transistors in a SOT23 package for switching the load.
In connection with that, I started to solve how far the heat from the SOT23 can be dissipated by the copper on the PCB.
Somehow I can't find relevant information, if I found anything at all it was related to SOT23-6 or...
I am looking for an infrared thermometer with a range up to 1600 C.
I mean the sensor itself, not the measuring device
Something like the MLX90616, but for 1600C MLX is only up to 1030C
Can you advise?
Thanks
Thansk.
For clarity, I dared to redraw it
So if I understood correctly, for example
Release some PWM1 into the lower probe and sense the ADC1 voltage on C1 on the upper probe
If next measurement, I may swap it.
Yes?
If so I see as the main problem, capacitor C2. This introduces a large...
First of all thnaks.
After kicking and redrawing it a little more clearly, it's clear to me too. Yes instrumenttion amplifier with amplification controlled by R5 asnd Voltage to Current converter controlled by R20. See new pic
With U3B I understand the function, but I don't know how the given...
I dug up and disassembled the old soil moisture meter
These are two concentric rings made of stainless steel wire, one serving as a transmitting antenna and the other as a receiving antenna.
Distance between antennas of the order of 5cm.
The output is the voltage corresponding to the soil...
Good question .
We have a fairly precise inverter
On 20A is output voltage 21V
On 80A is output voltage 22V
Voltage without load does not exceed 50V.
At a given switching speed, it is 80V in the entire SOA current range
Infineon offers similar transistors for 100V, but RdsOn 2mOhm
The...
My idea in matter
1IPT012N08N5 input capacitance 13nF, 2pcs paralel 26nF
TC4452 is 12A High Speed MOSFET Driver on high side full isolated DC/DC and Digital Isolator SI8620BB.
In my opinion, a simple and suitable solution for piece production with 12A excitation MOSFET. The pair of MOSFETs...
I have a welding inverter for TIG, in essence it is a switched current source DC 5-160A.
An AC inverter is required for aluminum welding, or the polarity of the electrodes must be changed.
Expensive inverters also allow pulse welding with adjustable pulse length and frequency, etc.
I don't...
Thank you, I know the principle of ultrasonic anemometers,
As long as I developed one, but that would be a different story.
It is not suitable for this purpose in terms of both price and size. I need to measure the flow in a tube below 1/2 ", the price can fit in about $ 10
I will return to...
I'm looking for a way to measure the amount of gas flowing so that it is small and cheap.
Gradually I ended up at MAF or Thermo Anemometer.
According to my experience, the heated platinum wire has a problem with impurities on its surface, plus I would have to solve how to assign the wire to the...
I would need 4 very accurate 0.01% and most importantly stable resistors TC 0,2ppm wint high accuracy long life stability..
Such resistances are made, for example, by Vishay and the Z-Foil series .
But I would need the resistors to have a very tight thermal relationship .
I see the solution in...
Anyone using STM32CubeMX with MDK-ARM Pro components?
For example I use CubeMX for inicialising STM32F103 and generate project for Keil v5.27
from MDK-ARM I want to add for example graphics library emWIN.
MDK-ARM include Manager for Run-Time Environment or I can add emWIN manually or ....
In...
2. I was looking for a small turbine for gases, but I found them only for liquids
I need to measure the argon flow 0-10l / min and air flow 0-100l/min
accuracy is not critical
3.
The price is decisive.
Technically, I need to measure against a reference vacuum.
Practically I am interested in...
I have an 8mm hose that flows the gas. Gas is Air or CO2 or Agron. Gas pressure is 0-10bar.
1.Pressure
Can you recommend a pressure sensor? 0-10bar, Voltage or digital output, resolution min 12bit, to PCB with 4/6mm hose or direct to 1/8" or 1/4" fitting, low price , I do not resist the...
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