RC Truck and Construction  

Go Back   RC Truck and Construction > RC Tech section. > Electronics tech

Electronics tech Anything to do with the electronics in a model. Lights, Radio, ESC, Servo, Basic electrical.


Reply
 
Thread Tools Display Modes
  #1  
Old 04-17-2020, 03:23 AM
Southgate ll Southgate ll is offline
Newbie
 
Join Date: Apr 2020
Posts: 11
Southgate ll is on a distinguished road
Default Is there a linear DC ESC out there?

My crane project, (in construction equipment) has one function that will not work with a standard reversible ESC. The slewing mechanism (rotation of upper unit) is driven by 2 small gearheads with coreless motors. They have no clue what to do with s standard ESC output. They need "filtered" linear DC.

I made an effective but bulky device from a model railroad MRC transistorized power pack, that uses a servo to turn the potentiometer from the MRC, to arrive at a linear DC control for those motors (powered off the upper unit battery pack) but I would rather just have a clean simple ESC if there is one that can do the job. Anyone know of anything? Dan
Reply With Quote
  #2  
Old 04-19-2020, 09:04 PM
Wombii's Avatar
Wombii Wombii is offline
Green Horn
 
Join Date: Feb 2018
Location: Norway
Posts: 231
Wombii is on a distinguished road
Default Re: Is there a linear DC ESC out there?

Very nice work on the crane. I don't know any linear ESCs, but I would test using an ESC with a different PWM output frequency. A higher frequency might better emulate a linear voltage.

Have you considered testing the small ESC board inside a standard RC servo? They're designed for small DC motors with a high gear ratio and having equal performance in both directions. I would guess there's a higher chance of finding a high pwm frequency output on a board from a mini or micro servo. Open the servo, carefully pull out the insides and center the feedback potentiometer.
Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 09:27 AM.


Powered by vBulletin® Version 3.8.6
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.