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another problem with prolific or FTDI is the driver can not reconnect or reopen the COM port automatically,if it disconnected by cable removal or reconnection of cable again or noise.
Is there a sch for USB/RS485 PL2303HXD interface?
What pins of PL2303HXD used for direction control ?
How to program PL2303HXD OTPROM? how we apply 6.5V? please help me.
there is no data in datasheet for these questions.
how to design a system that can do cable or wiring tests like as contiuty check , measuring ohmic resistance(megger) and dielectric strength check.
please help me to start.
PSM712 ans PSD12C are RS485 TVS,but ADM485 will fail if we apply 24V between A,B,GND.
Is there any tested circuit ?
There are IC from linear that is +-60VDC tolerant ,but the price is 4 times the ADM485!!!
I used PSM712 and PSD12C with 2 resettable fuses(100mA,60V) at output pins(A,B) of RS485 driver IC(ADM485) but these comabination can not protect
driver IC from failure when high voltage (for example 24V) is applied to A ,B and GND lines.
Please help me to design a circuit that is reliable...
I know the math routine to integrate and get average of a squarewave,but my question is why I need to average ? for what purpose I should average please give your comments
with a link or pdf if possible for more details.
I know how to generate a PWM using stm32f103 TIM3 and change the duty cycle in interrupt routine.
But I do not understand what is "take average from that function" please if possible explain more.
After reaching 100% charge ,is there a need to PWM or make IGBT on continuously?
If IGBT is on continuously(after softstart) when load current is zero(load draws current periodically, 2second draws current and 2 seconds draws no current) ,will IGBT remain on?
for softstart we need to turn on the SCR ,there is no need to OFF.
But at zero current of load scr will be off.
why we use IGBT instead of SCR for softstart?
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