Following datasheet, it can blow air with 26KHZ frequency between 10Vpp - 30Vpp.
I generated 26KHZ square wave with 'tone ()' and amplified the wave with arduino motorsield.
It somehow make sound and sond becomes bigger as i increase the voltage but it doesn't seems to blow air. ( i tried up to 18 V)
const int
PWM_A = 3,
DIR_A = 12,
BRAKE_A = 9;
void setup() {
pinMode(BRAKE_A, OUTPUT); // Brake pin on channel A
pinMode(DIR_A, OUTPUT); // Direction pin on channel A
tone(PWM_A, 26000);
}
void loop() {
digitalWrite(BRAKE_A, LOW); // setting brake LOW disable motor brake
digitalWrite(DIR_A, HIGH); // setting direction to HIGH the motor will spin forward
delay(4000);
}
It somehow make sound and sond becomes bigger as i increase the voltage but it doesn't seems to blow air. ( i tried up to 18 V)
Perhaps it's working without you realizing it.
The airflow is at a low rate (1 litre/min) and the pressure is very low (0.276 psi or 7.635 in water column).
How are you testing this?
A MIC4422 will handle upto 18V supply, its a beefy MOSFET driver and will have no
difficulty at 1MHz, let alone 26kHz (low frequency!). Available in DIL package and as SMT.
If you look in the PDF link given, you'll see on page 3, just what I said: symmetrical drive. In other words, it must be a bipolar drive that pulls hard high and low. A single transistor won't do.
Hello people!
Great question and discussion! But as far as I can read no clear answer was given. : @kyonglee were you able to find a solution to your problem ?
The question is: How to amplify 26kHz square wave signal generated by Arduino with the 'tone ()' function to satisfy the requirements of microblower http://www.mouser.com/ds/2/281/Murata_MZB1001T02_datasheet-493611.pdf ?
??? Is the solution a MOSFET gate driver (MIC4422) like @MarkT suggested? If yes, would it be possible to find a MOSFET driver solution for upto 20V supply (what about MIC5015)?
??? @polymorph What is your suggestion as a solution? Is the solution (with MIC4422) of MarkT capable of symmetrical drive ?
If somebody feels up to it, I have a additional challenge: I want to run the whole thing (including Arduino) powered by my smartphone or a smartphone battery.
The dices are rolling....
Thanks for all the replies! 8)
If somebody feels up to it, I have a additional challenge: I want to run the whole thing (including Arduino) powered by my smartphone or a smartphone battery
Paul_KD7HB:
If somebody feels up to it, I have a additional challenge: I want to run the whole thing (including Arduino) powered by my smartphone or a smartphone battery
How many seconds do you expect this to run?
Paul
Well no idea pall!
But what about the first part of the challenge ? The Solution with MOSFET gate driver MIC4422 from MarkT and the issue of polymorph with the need of symmetrical drive?
One step at a time and we're getting there.
Thanks anyway and I appreciate constructive discussion about the original subject of kyonglee.
Cheers 8),
Michal
MarkT:
A MIC4422 will handle upto 18V supply, its a beefy MOSFET driver and will have no
difficulty at 1MHz, let alone 26kHz (low frequency!). Available in DIL package and as SMT.
Hi Mark!
Your answer on the topic was the most constructive one. Could you elaborate on it? So your suggestion was to hook up the Murata MZB1001T02 directly to the MIC4422 ? (what about TC4420 ?)
Like in the picture attached?