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323 Threads found on edaboard.com: Supply Pcb
I'm designing a device that will be powered over an open frame power supply, I'm try to put as much protection to my pcb. Circuit Designers are using series of capacitors for filtering and inductor for TVS diodes. my power supply is 12V/6.25A, what is the best rating inductor that will work for this application. I'm a bit confused (...)
Make sure that the power supply is noiseless. You can check it with the oscilloscope. Grounding is also very important. It is better to use exclusive pcb ground traces for the voice circuit.
Hi, * pcb layout problems? * missing power supply decoupling capacitors? **** * are the supply voltages stable all the time? Klaus
Dear Friends, I don't think that it will create any problems because you are using 12V and 4 Amp. power supply. But one thing I will suggest you if you will use low current rating power supply still it work fine. Both the circuit required less than 1 ampere power supply. So that you can use 12V, 1Amp power supply.
The question can't be well answered without a schematic. Most likely the SIM900 digital output pins are driving the 5V supply through processor input pins and clamp diodes to VDD. Unless you intend to operate SIM900 with 5V powered down (don't see why this would be useful), there's no actual problem, just a bad considered test setup.
I had designed a power supply using PI expert.I designed the same using the PI expert tool for 5V, 0.8 A configuration. I have attached the Schematic from PI expert, Eagle Schematic of the same, pcb design. Only difference in circuit made is the ceramic capacitor attached to BP/M pin is 0.1uf instead of 10uf I got the output as 5V at No L
First thing that have to look in those high-power failures, is the pcb layout. Second have to look to the power supply (bias) filtering and decoupling, and any unwanted coupling between high power components.
Hi everyone, To have a symmetrical supply power of my design, I have put the VDDA to +1.65 (techno AMC c35 3.3V) and VSSA to -1.65V. And I have several blocs that have one node to GND=0V (for example the positive input of the integrator amp-op). As I have finished the circuit layout, I want to add I/O pads to finalize my circuit. I have differen
Hi All, I was wondering in case of OP-Amp circuits running from single supply. Once can derive VDD/2 by using TLE2426 (rail slitter) or by using potential divider followed by voltage follower as a buffer. The circuits work well. When doing the pcb for such design should the ground plane be 0V supply or should it be VDD/2? (...)
Can you help me identify this connector? Connector is used in PC power supply for connecting 230V on PS board. I thing raster 3.96mm, but male on pcb have skiped center pin 132049
I am a new Altium Designer user, and I only have five days to finish a flyback power supply design project assigned by my advisor. Basically, it is a very fundamental and common scheme. But I didn't use this software before. Can anyone give me suggestions to facilitate my using of this software? I mean, five days later, can I make it true to genera
I bought this power supply which have suddenly burned after I checked what was wrong I see that power transistor have been bad soldered. So after that I changed what was dead it is circled in red and power supply works but problem is when I connect on 12V some device which takes about 5.5A power supply starts to heat up really badly. And it (...)
what is the time base on your scope shot? Where is this resistor, is it somewhere in a switching power supply? Was the scope shot done with a neatly terminated bit of x1 coax, or with a scope probe with its gnd lead dangling all over the place.? What is the pcb layout like….are all the signal
You are not going to get 100kV on a pcb. You need to supply more details of what you are trying to achieve? A 100kV is not the sort of voltages that you get on pcbs or what you want to be playing with, it is mains distribution voltage......
Hi All, Please can anyone help me to identify this IC. It is in LG 32LB62 3D cinema TV's power supply. Problem is No power. Power board info : REV2.0 pcb: EAX65391401 (2.7) 125804 If anyone have this schematics, please can you share here. Thank you very much..
Hi, Possible problems: * power supply capacitor * pcb layout * does the xtal fit to the RTC? * does the load capacitor fit to the xtal? * software Klaus
Sounds like a problem of bad circuit layout with large ground loops, insufficient power supply bypassing or similar. The problem can be easily solved with a four-layer pcb and a continuous ground plane, a two-layer layout must be well considered but should work, too. Can you show layout photos, hardcopies or gerber data?
Dear Friends , I have a design in which there are 2 pcbs . One for POwer supply and other for Main controller card. Controller card : 1. 2 pt100 signal conditioning circuits. 2. Microcontroller. 3. lcd and 4 switches . 4. cable connector for connecting to power supply pcb. 5. uln 2003 for driving 3 relays (on power (...)
Hi, I am trying to do a flyback converter. I want to know if the simulation through LTSPICE will translate directly into the voltage supply that I would like. I'm using the LT3574 flyback IC. The impedance at the output I have derived using based on Ohm's Law, with the voltage I desire (25V), and the current that will be input to the next IC
A while back the owner of an electronics shop I frequent gifted me an old pcb for a power supply he had laying around, because he had no use for it and he wasn't sure where it was from either. Since then I've tried and tried to find the proper specifications of the machine but to no avail. The pcb takes 8 inputs, 1x 9V AC, 3x 10V AC, 3x (...)