Questions tagged [schematics]
The diagram that shows how the parts are hooked up logically. If your question is about a specific schematic software package, use that tag instead.
1,997 questions
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Altium Designer 24x how to use bus port in sheet symbol to correctly connect in parent schematic
On one page I have:
Parent schematic:
First block is connecting OK
Second does not connect correctly:
What am I doing wrong? Sorry if the question is naive - I am doing it infrequently (electronics ...
- 2,712
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A6217 with 700 mA LED schematic check
I’m working on a circuit board for an amber strobe unit. It will feature eight individually addressable LEDs controlled by an ATtiny microcontroller. Each 700 mA LED will be driven by an A6217 driver ...
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STM32L552RET6 she [closed]
This microcontroller has many options for each pin (GPIO, UART, SPI, I2C, etc.) , and I don’t know how to choose between them. Can you explain how pin selection is done in a hardware design and send ...
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Schematic review of solar charger with BMS
Please review my schematic for solar charger with BMS.
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PWM demodulator implementation
I was browsing the web for the prior works on the PWM demodulator implementations, and I found patent US4408166A, "Pulse width modulation decoder" from 1982.
I cound not obtain the vo ...
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Altium designer bus duplicate net names in hierarchical schematic
I have a Design with several subsheets. I'm having issues connecting i2c buses. Two sheets contain buses named IIC_SDA[1..25] and IIC_SCL[1..25].
When both of these sheets are placed inside the top ...
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Are theses inductor or capacitors for maal011078?
This one is just a demo design for 4.4-4.9 GHz provided by the MAAL011078-datasheet.
Is L3 inductor or capacitor? Is C5 an inductor or a capacitor? This name of symbol doesn't match the part list. (...
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How to modify resistor value to achieve -10°C offset in Perry TITE301/MC thermostat circuit?
I’m modifying a Perry TITE301/MC thermostat to change the temperature offset applied when the remote control is activated.
By default, activating the remote (closing contacts 6 and 7) lowers the ...
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What is a good way to arrange hidden (NC) and visible pins on a symbol?
A symbol should look and function in such a way it optimises the way a schematic is read. I want to change the symbol below in such a way. This symbol has a lot of pins that I don't want connected, ...
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Decoupling capacitor between two voltage rails
While looking at the reference schematic of a pcie-switch, I have ran into an unknown (to me) schematic filtering technique, which is connecting two voltages to a capacitor in series, like it is shown ...
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Simcom A7670 not detecting sim
I designed a board using the Simcom A7670 but im having trouble getting it to detect the sim.
I already tried with different sims and tweaking the hotswap sim detection AT commands without success.
I'...
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Why does the Rᴇxt value in the HSE clock section of the STM3210C-EVAL board differ from the Rᴇxt value calculated from the formula provided in AN2867?
Based on the things I'll explain next, I have two questions.
First section
The following figure shows the STM3210C-EVAL's HSE1 clock schematic with ...
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Will this “power or-ing” circuit allow my linear voltage regulator to be powered without a connected battery?
So I have this battery charging circuit. It’s the BQ24092 (battery charging IC) connected to the TPS793 (linear voltage regulator). When a LiPo of 3.7V is connected and a USB-C of 5V is connected, the ...
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Sump pump schematic diagram (2 pumps, 3 Float Switches)
Could anyone please verify if this schematic is correct?
The customer requires a system with two pumps and three float switches in a wastewater well.
Pump number 1 will be the main pump and will be ...
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STM32WL: cannot find what EXTGND pin is or does
I am creating a design with the chip STM32WL33c8 and I am checking the functionality of every pin. There is one called "EXTGND" and I cannot find what it is or what it is for.
In the ...