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Re: interfacing lm35 with 8051 using adc0804 to display temp. in 2 seven segment disp
I think if you go for some micro controller with built-in adc life will be easy.for example AT89c2051.
many years back I made it for 7-segment display.
charging a 12 volts battery 14 volts are o.k. As a general thumb rule for the current you should have at least 10 % charging current capacity for the charger .for example your SLA battery is 7 amp/ h rating you need at least 700 ma charger or 1 amp is also ok. but you have to care full about...
You have find if it is software problem or hardware problem.
when bell continuously ring you can measure the relay driver base emitter voltage, or you can add one led with a series current limiting resistor in parallel to relay to check.
Proteus simulation is not 100 % grantee the circuit real...
Here are some link where you can find your answer,
You can find more useful link if you know how to find it just write
DIY transformer winding machine
at google and go
www.youtube.com/watch?v=19syEeoAVzU
www.youtube.com/watch?v=MjlYtAuekcA
This circuit has two parallel path, one for battery charging and one for LED glowing. battery charging may be work when the solar panel voltage will be more enough may be 18 to 26 volts but other part of LED circuit will never work as it needed -ve base voltage that it will never get.
I have...
Have you check the libraries Supply1 and supply2 in supply1 there are separate symbols for supply +5V and +3.3 volts and many others symbols related to supply.
It is better you should use some PWM high frequency Transformer circuit to get good regulation as well as isolation from the mains supply.
see the topwitch solution by https://ac-dc.power.com/products/topswitch-family/
top switch integrate 50 nos of components in one you can even use some SMD...
Interrupt based ADC channels reading of PIC18F4431
I want to read all 5 or 8 channels of PIC18F2431 or PIC18F4431 in assembly language out of 9 channels.
Application note by MICROCHIP "AN900a" is not helping much.
These all channels are belong to PORT A and PORTE
The difficulty is this chip...
Why don' you check the AN900a application note from microchip.
Its depends what you configure the port pins. PORTA all pin can be used for analog inputs, but using this chip HSADC is not easy.
For the any drive its is a essential requirement motor should start and take some time for ramp up the speed by this current will be in a safe limit.
for sudden start inrush current might damage the drive semiconductors devices.
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