Hello , i want to design a schematic for 5v to 12v converter and i want to use as an input usb type c and as a an output a usb type B only for power delivery is and im not sure if this connections is enought to do the work ..read more

2 phone Intercom circuit diagram which can be used upto 1km in outdoor using ringer . Kindly share cuircuit ..read more

I am debugging my PCB where a control signal unexpectedly drops from 5v to 1v, hence toggles the logic. After power up, the signal is at 5.0v. The interesting thing is when a tweezer or any metal probe touches that pin, the signal drops to 1.0v right away, not all the way to 0v though. I wear gloves for insulation and hold the tweezer. A more interesting one is when I put the tweezer aside, still wear gloves, power cycle the whole, and touch that pin with my finger, the signal stays at 5v... Read more ..read more

Hi. I'm new, so, sorry for the mistakes I make (whether in the forum or when talking because I'm not that good at English). I'm trying to replicate this circuit (from this link: https://headwizememorial.wordpress....e-ended-otl-amplifier-for-dynamic-headphones/) in Proteus to try to understand/see how things work etc. --------------------------------------- But for the second part of the power supply, there is no output voltage shown: I... Read more ..read more

Just a quick question it says that the m5stack voltmeter can measure up to +/-36v I was just wondering would it be possible to modify it so that it can measure +/-99v absolute voltage ? Here is the unit I’m talking about and schematic... Read more ..read more

I need a connector for a 1.5mm pitch flat flex connector. The only places I found selling them are some Chinese factories with an MOQ of 500 or 1000. Does anyone make them? The only alternative I can think of is to use a 0.5mm pitch connector and every 3rd pin, but alignment will be an issue ..read more

I'm trying to find some old three place connectors for a old Yamaha ignition trigger. It has the letters " SJD " raised letters on the face of the connector. I only need maybe 50 pieces each of the male and female ends. Does anyone know where to buy these or identify these connectors? I have dimensions and pictures too. Any help would be appreciated! rpmlou@gmail.com ..read more

Hello, this is my first post on this Forum ... Sorry if I make mistakes Has anyone tried to wire an arduino to a T6 AC servo motor like this one https://www.oyostepper.it/goods-109...000-girimin-319-Nm-Encoder-a-17-bit-IP65.html My idea was to connect on the CN1 port like below : driver PUL+ connected to arduino Pin 9 driver PUL- connected to arduino GND driver DIR+ connected to arduino Pin 8... Read more ..read more

Hi! I am new on this forum, Hi from Germany! I want to power a 5V arduino circuit from my pitbike single phase stator and I want to build a shunt regulator for it. On the internet I found a schematic for a curcuit like that and my question is: Would this circuit still be possible just by changing the zener diode to lower the output voltage and adding a capacitor for smoothing? I guess I would also need a load resistor for the magneto since the arduino wont draw much current and the coil... Read more ..read more

Hello. I was creating a bldc driver using no bldc driver IC but with 3 mosfets half bridges. The embedded code was switching between the commutation stages, starting slow with an increasing frequency of steps using a timer ISR and moving its start value closer and closer to its max (255 bits). The high side was given a PWM of low duty (5%) AND' gated with the high sides commutation signal. the motor started "rough" until the frequency of commutation slowly got faster and faster and in... Read more ..read more