[Tastebridge] [Noisebridge-discuss] type of diode needed for relay/arduino circuit

Frantisek Apfelbeck algoldor at yahoo.com
Tue Jun 12 20:17:00 PDT 2012


OK I'll be going shopping in few hours. If anyone could have a look on the info which I uploaded to the wiki below

https://noisebridge.net/wiki/Temporary_IE


and tell me if it sounds OK and if I am missing something, that would be great!

Sincerely,
 
Frantisek Algoldor Apfelbeck


biotechnologist&kvasir and hacker


http://www.frantisekapfelbeck.org


"There is no way to peace, peace is the way." Ghandi



________________________________
 From: Christoph Maier <cm.hardware.software.elsewhere at gmail.com>
To: Frantisek Apfelbeck <algoldor at yahoo.com> 
Cc: tastebridge tastebridge <tastebridge at lists.noisebridge.net> 
Sent: Wednesday, June 13, 2012 9:10 AM
Subject: Re: [Noisebridge-discuss] type of diode needed for relay/arduino circuit
 

Happy circuit frying!

On Tue, Jun 12, 2012 at 4:34 PM, Frantisek Apfelbeck <algoldor at yahoo.com> wrote:

Hi Christoph,
>Thanks a lot! Your explanation "rings a bells" to me, that is what the guys were trying to explain to me  before I think.
>
>
>I'll get that one today and I'll post you on our progress tonight, lets hope we will hear the "clicking sound".
>
>
>Sincerely from Seoul,
> 
>Frantisek Algoldor Apfelbeck
>
>
>biotechnologist&kvasir and hacker
>
>
>http://www.frantisekapfelbeck.org
>
>
>
>"There is no way to peace, peace is the way." Ghandi
>
>
>
>________________________________
> From: Christoph Maier <cm.hardware.software.elsewhere at gmail.com>
>To: Frantisek Apfelbeck <algoldor at yahoo.com> 
>Cc: Noisebridge <noisebridge-discuss at lists.noisebridge.net> 
>Sent: Tuesday, June 12, 2012 10:49 PM
>Subject: Re: [Noisebridge-discuss] type of diode needed for relay/arduino circuit
> 
>
>
>Hi again Frantisek,
>
>it looks like the diode is in parallel with the relay winding and reverse biased if the arduino drives the relay coil.
>As the current to the relay coil is switched off, the diode allows the energy in the relay coil to dissipate 
>without frying the drive circuit.
>
>If I'm guessing correctly what the diode is supposed to do, a plain old 1N4001 will do.
>
>Christoph
>
>
>On Tue, Jun 12, 2012 at 4:13 AM, Frantisek Apfelbeck <algoldor at yahoo.com> wrote:
>
>Could someone tell me what type of diode is the one on the picture - link below?
>>
>>
>>https://noisebridge.net/wiki/Temporary_IE
>>
>>
>>
>>We need to connect relay to the peltier device (100w) and to arduino, it is heart of the cooling/heating system of the experimental incubator. We took this picture some year and half ago but I do not know what type of diode it is and I need to buy some for tomorrow. We are going to repeat this "experiment" and hopefully also connect 10 kohm based thermistor and measure temperature.
>>
>>
>>Thanks for any hint,
>>
>>
>>Sincerely,
>>
>> 
>>Frantisek Algoldor Apfelbeck
>>
>>
>>biotechnologist&kvasir and hacker
>>
>>
>>http://www.frantisekapfelbeck.org
>>
>>
>>
>>"There is no way to peace, peace is the way." Ghandi
>>
>>_______________________________________________
>>Noisebridge-discuss mailing list
>>Noisebridge-discuss at lists.noisebridge.net
>>https://www.noisebridge.net/mailman/listinfo/noisebridge-discuss
>>
>>
>
>
>
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