Questions tagged [7805]
7805 Voltage Regulator IC is a member of 78xx series of fixed linear voltage regulator ICs.
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In which option, the diode will make the lm78xx circuit safer
This image was taken from Fairchild's datasheet on lm78xx. I have already built a working example of it, but I am still thinking about adding some additional diode protection (D1, D2). Which option ...
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12VAC-5VDC regulator, but L7805CV doesn't work properly
Hi everyone. I am trying to make 12VAC - 5VDC power supply. However when plugged in, voltage between L7805CV in - ground was 4V while output was 1V.
I have test 7805 separately and it works correctly ...
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Feedback on astable 555 timer circuit to control MAC valve for turbo control
I have some questions and wanted to get feedback on this circuit I have put together. Basically to see if there is something I missed or obvious that I should change or should have designed ...
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Voltage drop on system activation
My question is generic in nature about electronics system design. I am trying to put together an RC car which is powered by an AVR Atmega168 chip. It communicates through an HC-12 module and has a ...
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NodeMCU with JHD162A Lcd module display issue
I have uploaded a program to NodeMCU, to print "hello, world" on JHD162A 16x2 LCD module. But the text doesn't appear on the LCD display. Instead just black blocks appear on the first row on the LCD. ...
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Minimal ripple, minimal fuss
I am in need of a stable 5v source, max current around 200mA for a pocket oscilloscope. I have tried a powerbank, but the step-up converter puts through too much ripple that messes with the Scope.
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