Hi, welcome to a video tutorial from Robojax. in this video we are going to
test and see this relay timer that connects our turns on an AC(or DC) load
between 0 to 10 second so let's see and check this
High voltage warning
this really can be used to with AC and DC load make sure that this is not
placed on a metal or conductive surface and as she we will protect it and when
it's connected to the power do not ever touch this module
Hardware explained
so the really module have two LEDs this is a power LED this is the energize of
relay when the relay is turned ON this blue light will go ON so I'm gonna
disconnect it now so I can explain it better without the light . so we have n
input here here and this pin is connected to VCC to the 12 volts and from this side
it will be connected to the ground I have tested this that the system can
work up up to 8.2 volts so if you are using it with nine volts
it should turn ON. this side we have three connections for the
relate these two pins on this side are normally open NO and these two are normally
closed NC or connected so when you put your wires one wire should be here and the
other wire should be either there or here depending on your application
if you connect the other wire here when the relay is energized it will be
connected but if you connect your wires here without any power it will be
connected but when the relay energizes this will disconnect this so you can
find a way to use it in that situation as well and then we have a multi turn
potentiometer here with this one you can determine the timing of how long it
takes before the relay will go on when you power it up so when you power this
up it takes a while and the time is determined by this potentiometer so if
you rotate it clockwise that time will be the increased and if you rotate it
counterclockwise the time will be decreased. It needs at least ten or fifteen
turns or less or more before you can see the change so make sure that you turn it
so many times so you can see the effect because this is multi turn. now a length
of the module is 67.6 millimeter so the width of the module is
21 point 1 millimeter and the depth of the module including these pin that are
out is 19 point 1 millimeter and it weighs
sixteen point four grams
Power Rating
we have to consider understand the amount of load or the power of the load
that you're connecting so this at 250 volts in Asia and Europe which you have
240 or 220 volts it will be 10 ampere and 125 at 125 which is North America
and Japan will be 15 amp so what you do is in your calculation make sure that
let's say you have 240 volts multiplied by 10 ampere so you can connect up to
2400 watt or 2.4 kilowatt keep that in mind that that is the maximum and if you
are in North America so 120 times 15 so this will be 1800 watt or 1.8 kilowatt
if you overload this module the contacts will melt down and also remember that
the voltage should be 12 volts in order for the contact to hold tightly for the
current because if you have lower voltage the power that is holding the
contacts will be decreased and then there will be Sparks and then the meltdown so
that's also a factor and you have to remember that
Semonstration
I am connecting it to 12V power supply.
but the timer 555 IC with this potentiometer is the selecting
this time that well energize the relay so the time can be adjusted from here so
if you rotate it to the right (clockwise) the time will increase and if you rotate it to
the left (counterclockwise) it will decrease but remember that this is multi-turn potentiometers
so you have to do at least ten or fifteen turns before you reach the point
that the change will be reflected
so I've reduced the time now when I turn it off let's see one two so almost two
seconds so it become two seconds if to increase it I'm turning it right few
turns one two three four five six six more turn to the right one two three
four five so now it's almost five seconds so this can be adjusted between
zero to ten seconds but at that time the timer that keeps this relay ON or if you
can connect it and reverse it or turn off something which initially will be on
that can be used in many applications so I will not suggest an example but you
will find a use for this so that's it so this is the module thank you for
watching please thumb up 👍 the video and also share it and subscribe
Typed on Marc 07, 2020 by Ahmad Shamshiri.
The least you can do for me is to thumb up the video 👍 and click on SUBSCRIBE button. thank you.
you