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Low cost, Selecting between Vusb and Battery
  1. I have a circuit which has power coming from Vusb or Vbat. Current is 700mA max.   2. When power from Usb is coming, device should run on Vbus and Vbat should not...
Thursday, 10 December 2020 - 15:32
True sine wave oscillator for RF
1. Looking for a true/pure sine wave oscillator of fixed 40.68Mhz to drive this ckt:  https://www.mouser.in/ProductDet...   2. Found one source : https://...
Friday, 23 October 2020 - 05:36
What kind of sensor can used for measuring tape
I have application, where need to know how much elastic thread has been taken out from the device. Something like this: https://www.youtube.com/watch?v=... What kind of sensor is...
Saturday, 3 October 2020 - 14:46
3 phase High voltage ac to low power 5V dc out
1. Have 3 phase ac input with neutral, where each phase voltage goes from, 85V-600Vacrms 2. Need output at 5V/500mA 3. I was checking it:  https://www.st.com/resource/...
Thursday, 24 September 2020 - 14:29
Selecting IC for auto-switch to battery, in case of mains(dc) absent
1. I have a system, where: a) Input SMPS is 11-14V, where it is used to charge battery with 2.5Amps and supply 12.5Amps to load also. b) SMPS is used to charge lithium battery...
Monday, 14 September 2020 - 11:46
Low cost mosfet replacement for diode in boost application
1. have a boost circuit where: a) Vin: 8.1V to 12.3V b) Vout = 12.3V/12.5Amps  (If 12V/12.5A possible then better, but my ckt gives 12.3V, otherwise need to switch to sepic...
Saturday, 5 September 2020 - 05:20
Alternative freelancing websites
I found upwork good website and recently got one work there also. I was wondering if there are equivalent websites also for freelancers, which are genuine also.   Was reading...
Thursday, 27 August 2020 - 15:46
MCU PWM from 5V to 10V
1. I have give PWM to meanwell driver here: https://www.digikey.in/product-d...   2 .MCU power is entirely different than meanwell driver. So MCU gnd is different than...
Wednesday, 19 August 2020 - 08:56
Why IAR produces different code size for Debug and release
1. I am using IAR for 8 bit MCU, IAR shared version: 8.3.2.5988   2. I have made code optimization and linker optimization settings same for both release and debug.   3...
Thursday, 6 August 2020 - 14:06
No code for android app , only drag and drop method
I have to make very simple app like press button "Read", and read data coming on Bluetooth, press button "write" , send data on android bluetooth.  I was looking for drag and...
Sunday, 2 August 2020 - 15:09
Curve fit for sensor equation
1. Have a thermistor, data whose dataset is available not anything else from company except B value. Attached is data.   2. Trying to make a equation for it and implement for...
Wednesday, 8 July 2020 - 06:14
ADC reading falling overtime when measured
1. I am interfacing sensor thermopile and thermistor , whose data-sheet is attached.   2. Here is schematic of 24 bit adc which is used to measure thermopile mV and...
Saturday, 4 July 2020 - 07:40

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