Ttl

• Jan 7, 2018

• #1

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Lukesteral

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Hello, from what I understand TTL is basically changing the frequency of the laser to make deeper or lighter engravings and cuts, but can you use TTL to increase the default pulse frequency in a laser to make it more powerful?
For example, the laser I bought came with a wall adapter. If I were to TTL the laser, could I get a higher pulse frequency than with it being connected to a 12v 5a wall adapter?

 

• Jan 7, 2018

• #2

Cyparagon

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No, Transistor-transistor logic (TTL) is just a predefined logic level of 5V. Apply 5V to turn it on, and apply 0V to turn it off. That is ALL it means.

Instead of a binary input, You can change the average power by varying the duty cycle of the pulse-width modulation (PWM) from 0-100%, which will correlate with an average power from 0-100%. If you google PWM, this whole subject should make a lot more sense to you.

 

Last edited: Jan 7, 2018

• Jan 7, 2018

• #3

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Lukesteral

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Yes but if I put PWM to 100% or around there with ttl, it would be more powerful than just having it hooked up to a wall adapter, right? Or is the default PWM already at 100% when hooked to the wall?

 

• Jan 7, 2018

• #4

lasersbee

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You can not increase the Max power of a specific
Laser by plugging it into a wall outlet or by using
PWM...

The Max Power of a specific Laser is just that.
You can however Decrease the max power by
using a less than 100% PWM ratio.

Jerry

 

• Jan 7, 2018

• #5

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Lukesteral

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Oh darn. Well thank you guys for your help!

 

• Jan 7, 2018

• #6

paul1598419

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Since you are using this to engrave, you would want the frequency of your PWM to be high enough to not leave spots where the laser turns on then off. Something in the range of 4 KHz would work fine as I am currently building two of these to modulate RGB lasers for changing the beam colors.