I’m in the process of designing linear psu based on KORAD3005D. I started by simulating this circuit, but I have trouble doing that – it oscillates horribly. I’m not an expert in analog circuits, but I think it’s some sort of problem with spice models. SIMULATION FILE ORGINAL SCHEMATIC
What are the reasons X-ray vacuum tubes could not be replaced by solid state alternatives?
I have a 40-pin 5-inch LCD screen and now I want to use it with my Raspberry Pi 3. I want to implement a potentiometer to adjust the brightness of it. Is the 555 timer IC the "best" solution for that? The backlight LEDs needs around 21V to work. What parts do you recommend for […]
I have a question regarding this IC 74LS90 Counter Originally, this IC is count only from 0 – 9 How am I supposed to modify the counter limit for example to 0-5 or 0-7 ? I have been googling arround and haven’t find any solution. Help/Clue will be appreciated
Are VIN- and VOUT- equivalent? That is, can I power a device using VOUT+ and VIN-? Or are the two grounds different? The picture below is of a random boost converter. For some power supplies, I have been able to measure continuity (using a multimeter) between the two grounds, while for others I have not.
Background I have a 12V power supply that is connected to a switching regulator to get a 1.8V power signal. I have a microchip running at 1.8V and want to control a 12V relay via GPIO. The relay is used to open and close a lock that only functions on 12V. Help in 1:Must-operate voltage […]
If I have the flowchart shown below: Below is the code that represents the flowchart: Can someone verify if the flowchart matches the code?
simulate this circuit – Schematic created using CircuitLab I have 6 AA batteries that I would love to power my Arduino Nano and HCSR04 ultrasonic sensor. However, for my low power application I want to use the bare minimum power required for the components. Since the Nano can run as low as 4.5 volts and […]
LNURL-auth can be used to implement registration/login in a web app in which users don’t need username/password or other credentials instead they can just use their LN wallet to login. However cannot be used if the website doesn’t support it so can we do this locally for websites using a browser add-on? Right now only […]