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Hi
I need to print PCB layers directly from Altium with the actual size in PDF file format
Altium can do it but it is not famous
if anyone know this method please help me
Absolute phase refers to the phase of a waveform relative to some standard (strictly speaking, phase is always relative). To the extent that this standard is accepted by all parties, one can speak of an absolute phase in a particular field of application.
Relative phase is defined as the...
you don't need H-bridge , only one N-MOSFET (low side) is enough.
connect
12 V to Red wire (positive)
Black wire (Negative) to MOS's drain
MOS's source to 0 V
build suitable gate driving circuit
Motor can work without any diode
there is no problem
if you want to protect relay (not the controller) use 4 diodes
connect motor terminal A to anode of diode 1 and connect its cathode to Pos.
connect motor terminal A to cathode of diode 2 and connect its anode to Neg.
do the same...
The controller & the motor is isolated by relay
controller load(s) is ULN inputs
ULN load(s) is relay
relay load is motor
when controller's pin =1 ULN works , it sinks current from the relay' coil and relay works
then when Pin = 0 the FWD (diode of uln) works and protect the uln
when...
you can insert resistor ( low value ) in series and measure voltage across it then calculate I = V / R
R should be very small to be neglected in total circuit resistance calculation
you will connect the two common wires to 12 V
you can use more than one ULN transistor in parallel to increase I
each o/p can sink 500 mA
or use 4 Mosfet transistors shuch as IRF540
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