Re: Speed controller for golf trolley
Where to start?
Where to start?
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Re: Speed controller for golf trolley
https://www.badcaps.net/forum/attach...6&d=1548445387
What are the P/N as printed on top of those two IC's?Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809Comment
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Re: Speed controller for golf trolley
It looks like the one ic is a LM78L05 regulator and the other one could be a microchip 12C5xx pic icLast edited by R_J; 02-06-2019, 12:00 PM.Comment
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Re: Speed controller for golf trolley
Will check them in a minComment
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Re: Speed controller for golf trolley
Have you checked to see if you have 5 volts coming out of the regulator ic?
Where does the speed pot connect and where does the on/off switch connect?Comment
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Re: Speed controller for golf trolley
The way it likely works is 12 volts is applied to the board from the battery, U3 supplies 5 volts to the pic processor. when the switch/pot is activated the pic outputs a pwm signal to Q4 & Q5 then to the output transistors (this is the variable speed signal) then the pic also turns on the relay connecting the transistor output to the motor, driving the motor at whetever the speed pot is set to. The relay is likely also used to provide dynamic braking for the motor
Q7 looks like the relay drive transistor, D3 is protection across the relay coil.
I believe that diode D1? (to220 dual diode?) is likely connected across the motor to protect the output transistors.Last edited by R_J; 02-06-2019, 02:26 PM.Comment
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Re: Speed controller for golf trolley
Post #17 also suggested to test the Voltages, but no data from OP.Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809Comment
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Re: Speed controller for golf trolley
There is 5v to the picComment
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Hi everyone
I am just beginning, has anyone got Model G60 A2A power supply schematic.
It's for charging golf trolley, input 100-240V50/60 Hz 1.0A output 13.8 v 3.3A.
Please. If possible.
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Hi guys,
If someone would be able to provide some expertise, I'd be very grateful.
BIOS Corruption - Cause
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I recently bought a used tankless hot water heater and the controller board is completely dead no power up when power is applied the display board works however the main controller board does not work correctly at all the fuse is good
I bought a used replacement controller board that also had issues that I was able to fix and now the tankless water heater works correctly now
However I would like to know if I could figure what happened to this controller board if possible
Tomorrow I will take some better pictures of both side of both boards
The...
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