Homebrew PCBs

thanks
I had not seen that dimmer hack yet.
Those pictures show the guts of the laminator.
Looks  a lot like my APACHE AL9
http://www.learnmorsecode.com/laminator/al9.html

http://www.learnmorsecode.com/laminator/gbc/index.html



On 12/31/2016 02:38 PM, Harvey Altstadter hrconsult@... 
[Homebrew_PCBs] wrote:
>
> Rob,
>
> The Harbor Freight unit is "concentric" in the sense that the heat is 
> provide from all around the roller assembly. It is not concentric with 
> either roller. There are two heaters mounted on opposite sides of the 
> rollers, and an aluminum structure that is manufactured to fit around 
> the rollers. The aluminum structure is actually two pieces that are 
> separated to form the slots for the paper path.
>
> The BOM for this unit is mostly irrelevant. By the time the mod is 
> done, not much of the original circuitry or wiring remains. The 
> temperature control thermoswitch is removed,and replaced by the 
> temperature controller I referenced yesterday, the thermal switch that 
> controls the ready light is removed because it operates at a 
> temperature that is irrelevant. What remains is the small circuit 
> board that holds the ready LED and the power indicator LED, and the 
> ON/OFF switch. This board has two rectifiers, two resistors and two 
> LEDs. The motor remains, the heaters remain and the thermal fuse remains.
>
> There are some photos of the interior of the laminator here: 
> https://www.flickr.com/photos/15304611@N03/sets/72157635447779272/ 
> This mod is one that adds a dimmer in series with the motor, so most 
> of the pics have to do with modifying and mounting the dimmer, but 
> there a few that show the motor, the heater and the circuit board. The 
> heater control thermoswitch is on the underside of the heater 
> assembly, and not in view in these pics.
>
> Harvey
>
> On 12/31/2016 11:10 AM, Rob roomberg@... [Homebrew_PCBs] wrote:
>>
>> Really? This grabs my attention.
>> What make and model?
>> Can you take a picture and share?
>> Is there an online parts list we can eyeball that shows how 
>> concentric heaters are mounted?
>>
>>
>>
>> On 12/31/2016 11:53 AM, 'David C. Partridge' 
>> david.partridge@... [Homebrew_PCBs] wrote:
>>>
>>> But, but the heaters are concentric with the rollers (or at least 
>>> they are in my laminator) so
>>>
>>> stopped/forward/reverse should make no difference.
>>>
>>> Dave
>>>
>>
>
>