Electrical Engineering Stack Exchange
Electrical Engineering Stack Exchange

Questions tagged [split]

65 questions
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2 answers

Is it safe to implement a split power supply from two identical AC/DC adapters?

If I have two identical AC/DC adapters(Such as laptop adapters) can I achieve this as in the following illustration? Would it be safe?:
user16307
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Why 3v3 should be connected to the center point of Ethernet termination?

I am designing an 10/100 Ethernet on my board and I can't understand why 3.3V should be connected to the center point of the termination. The schematic checklist recommends it actually and I checked several design and datasheets even gigabit ones…
Quentis
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5
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1 answer

how to split audio with buffers?

I am split an audio signal coming from an op amp to both a line driver buffer and a VU meter buffer, as shown in the schematic. My trouble is in determining the correct placement and value of resistors R1 and R2 in order to split the audio signal…
jilski
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4
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1 answer

Single symbol for split voltage source in LTspice

Below is how many people make a +/-15V split-supply in LTspice: But this takes too much time each time to select 3 components GND and give them values one by one, etc. So I was wondering if there is a way to copy this topology as a single symbol or…
user16307
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1 answer

What is the reason for multiple ground connection and multiple testpoints on this PCB?

Please, have a look at the image: The biggest pad at the top is the negative terminal of a battery holder. Through 0 Ohm resitor above it goes to a capacitor across a DC motor (not shown). Below the diode and off the image it goes to a ground of a…
PF4Public
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2 answers

Transformer to convert 220V split phase to 220V single phase

I'm a digital guy whose forgotten his "big wire" electrical education. I'm surprisingly unable to find a solid reference for this. I have a (European) 220V 50Hz split phase source (110V + 110V + GND). I have a UPS which only accepts single phase…
dweeb_plus_plus
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How many times can you split the 3.5mm audio line cable signal from a music player

How will the volume of the sound decay as you iterate the splitting of a 3.5mm audio line cable signal from a music player?
O0123
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2
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Audio splitter without buffer possible?

The audio source is an active mixer with an output impedance of 100 ohm, 25 mA output current and 3 V-pp max. The inputs that would receive this source are (1) an ADC with an input impedance of 20 kohm and (2) another device with a "variable" input…
Domingo
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2
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2 answers

NMEA via RS232 and PPS (TTL) splitter

I have GNSS device that outputs NMEA messages via RS232 PPS signal via a digital out (TTL) I need to distribute both the RS232 and the PPS signal to more than 1 system (currently 3, but could be more in the future). For one system (typical PC or…
Tanasis
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2
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2 answers

How to split 5V USB input into 4 rails (+/-5V, +/-15V)? Problem with combining two virtual grounds

Problem: I have 5V input from USB, I need to split it into four rails with +/-5V and +/-15V. Currently done: I have built the following circuit in a breadboard. I have measured the outputs with a multimeter, and it is worked fine until I have tried…
Random Data
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Using different termination types on CAN bus

Is it possible to terminate one end of a CAN bus using Standard termination (single 120 ohm resistor across CANH and CANL) and the other end using Split termination (two 60 ohm in series with a capacitor between their joint and ground)?
Babi
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High Current Split Supply

I am looking for a way to construct a 1 A, ±15 V split-supply. So far, I've seen a number of designs for split-supplies (http://tangentsoft.net/elec/vgrounds.html), but they are all low current (i.e. 100-300 mA). My application involves several Mass…
Michael Molter
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1 answer

AC adapter splitter

I'd like to power 2 or more devices (all requiring the same voltage) with a single AC adapter, instead of using multiple adapters. Is it safe to use one of these splitter cables? In my case, i have: 1 universal DC adapter set as 5VDC and rated 3A…
eadmaster
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How to mix to video sources into a split screen (two inputs, one output)

I want to build a circuit for my car (It has two cameras, front and rear) that shows me the front and rear camera in the same screen (splitted), top half the video from the front camera and bottom half, the video from the rear camera. The cameras…
Barenca
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Can I use MAX232 instead of a ICL7660 to make a split power supply?

For an opAmp rails I need positive and negative voltages i.e. Vcc, Vee. I look for a good IC which is commonly used for creating split power from a single power supply. Many recommends ICL7660. I currently have a MAX232. Can it be used instead? I…
user16307
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