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Tagged: Amilcare

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1 October 2019 at 19:56 #6602

Amilcare
Keymaster

The sensor resistance is fine by 0,1 ohm tanto lo operazionale funziona uguale anche con tensioni così basse in ingresso. Alla massima corrente avrai una caduta di 0.15V e la dissipazione sarà di 1/4W

1 October 2019 at 20:06 #6604
farmzone.net
Participant
Both for the 5V to 12V, now I had done this for the 12V if it can go well then I do the math for the 5V.
So the accounts are also fair for how much the transistor must dissipate?
- This reply was modified 7 years ago by farmzone.net.
- This reply was modified 7 years ago by farmzone.net.
1 October 2019 at 22:30 #6607

Amilcare
Keymaster

Usa un diodo per il riferimento di tensione per la corrente, ci fai scorrere 10mA poi parti da 0,7V come riferimento per il partitore fatto con una resistenza da 12k con una in serie da 3k3, ai capi di quest’ultima hai 150mV per una corrente di intervento di 1,5A

1 October 2019 at 22:32 #6609

Amilcare
Keymaster

Considera però che la massa è comune sia su 5V che su 12V e rischi che non funzioni bene

2 October 2019 at 13:44 #6613

farmzone.net
Participant

Ok, I would make a summary of the situation:
The power source is a computer atx power supply.
The lines I would like to limit are the 12V and 5V lines, the 3.3V I'll see.
I started from the idea of doing 2 different circuits one for 12V and one for 5V, both as components and as a scheme.
Unfortunately these are things that I have not studied, so I read, look for information and ask for help, unfortunately I am also aware that I read some big hits, but not being able to refute them I have to take them for granted and this sometimes leads us astray, I apologize for that.
As for the reference of 0.7V so:

see source fidocadj Zoom fidocad

source FidoCad :
[FIDOCAD]
FJC B 0.5
MC 85 27 0 0 115
FCJ
COMPANY 90 27 4 3 0 0 0 * R1
COMPANY 90 32 4 3 0 0 0 * 470Oh
MC 85 42 1 0 200
FCJ
COMPANY 90 48 4 3 0 0 0 * Dl
COMPANY 90 52 4 3 0 0 0 * 1n4148
MC 85 21 3 0 010
FCJ
COMPANY 90 11 4 3 0 0 0 *
COMPANY 81 9 4 3 0 0 0 * +5v
MC 85 63 0 0 045
AT THE 85 21 85 27 0
AT THE 85 57 85 63 0
AT THE 85 37 85 42 0
AT THE 85 42 111 42 0
SADDLE 85 42 0
COMPANY 110 37 4 3 0 0 0 * 0.7V

However, consider that the mass is common….

I don't understand this.

2 October 2019 at 14:33 #6617

Amilcare
Keymaster

questo intendevo

see source fidocadj Zoom fidocad

source FidoCad :
[FIDOCAD]
FJC B 0.5
MC 155 54 0 0 170
FCJ
COMPANY 163 56 4 3 0 0 0 * C1
COMPANY 163 61 4 3 0 0 0 * 0.1m
MC 100 35 0 0 115
FCJ
COMPANY 104 42 4 3 0 0 0 * R1
COMPANY 104 36 4 3 0 0 0 * 10k
MC 190 95 0 0 115
FCJ
COMPANY 194 101 4 3 0 0 0 * R3
COMPANY 194 95 4 3 0 0 0 * 0.1Oh
MC 100 60 1 0 100
FCJ
COMPANY 105 67 4 3 0 0 0 * P1
COMPANY 105 59 4 3 0 0 0 * 1k
MC 140 65 0 0 580
MC 175 70 0 0 410
FCJ
COMPANY 194 67 4 3 0 0 0 * T1
COMPANY 193 73 4 3 0 0 0 * IRF530PBF
AT THE 100 45 100 60 0
AT THE 100 70 100 115 0
AT THE 105 65 140 65 0
AT THE 140 75 130 75 0
AT THE 130 75 130 85 0
AT THE 165 70 175 70 0
AT THE 190 80 190 95 0
AT THE 130 85 190 85 0
SADDLE 190 85 0
AT THE 190 105 190 115 0
AT THE 190 115 100 115 0
SADDLE 130 115 0
AT THE 155 67 155 50 0
MC 155 50 3 0 010
FCJ
COMPANY 151 39 4 3 0 0 0 * +12V
COMPANY 165 40 4 3 0 0 0 *
AT THE 155 73 155 115 0
SADDLE 155 115 0
SADDLE 155 54 0
AT THE 190 60 190 55 0
AT THE 190 55 198 55 0
AT THE 198 28 86 28 0
MC 130 115 0 0 045
MC 165 54 3 0 045
MC 71 28 0 0 073
FCJ
COMPANY 81 33 4 3 0 0 0 *
COMPANY 70 20 4 3 0 0 0 * +12V
MC 71 115 0 0 073
FCJ
COMPANY 71 107 4 3 0 0 0 * 0V
COMPANY 81 125 4 3 0 0 0 *
AT THE 81 28 86 28 0
AT THE 81 115 86 115 0
AT THE 86 115 100 115 0
SADDLE 100 115 0
MC 198 28 0 0 073
FCJ
COMPANY 196 20 4 3 0 0 0 * +12V
COMPANY 208 38 4 3 0 0 0 *
MC 198 55 0 0 073
FCJ
COMPANY 208 60 4 3 0 0 0 *
COMPANY 198 47 4 3 0 0 0 * 0V
AT THE 100 35 100 28 0
SADDLE 100 28 0
MC 90 75 3 0 200
COMPANY 79 63 4 3 0 0 0 * Dl
COMPANY 69 68 4 3 0 0 0 * 1N4148
AT THE 90 61 90 55 0
AT THE 90 55 100 55 0
AT THE 90 75 90 115 0
SADDLE 100 55 0
SADDLE 90 115 0

per il resto se ne parla dopo cena quando rientro in casa

2 October 2019 at 14:35 #6619
Amilcare
Keymaster
In my haste I had put the diode on the contrary

see source fidocadj Zoom fidocad

source FidoCad :
[FIDOCAD]
FJC B 0.5
MC 155 54 0 0 170
FCJ
COMPANY 163 56 4 3 0 0 0 * C1
COMPANY 163 61 4 3 0 0 0 * 0.1m
MC 100 35 0 0 115
FCJ
COMPANY 104 42 4 3 0 0 0 * R1
COMPANY 104 36 4 3 0 0 0 * 10k
MC 190 95 0 0 115
FCJ
COMPANY 194 101 4 3 0 0 0 * R3
COMPANY 194 95 4 3 0 0 0 * 0.1Oh
MC 100 60 1 0 100
FCJ
COMPANY 105 67 4 3 0 0 0 * P1
COMPANY 105 59 4 3 0 0 0 * 1k
MC 140 65 0 0 580
MC 175 70 0 0 410
FCJ
COMPANY 194 67 4 3 0 0 0 * T1
COMPANY 193 73 4 3 0 0 0 * IRF530PBF
AT THE 100 45 100 60 0
AT THE 100 70 100 115 0
AT THE 105 65 140 65 0
AT THE 140 75 130 75 0
AT THE 130 75 130 85 0
AT THE 165 70 175 70 0
AT THE 190 80 190 95 0
AT THE 130 85 190 85 0
SADDLE 190 85 0
AT THE 190 105 190 115 0
AT THE 190 115 100 115 0
SADDLE 130 115 0
AT THE 155 67 155 50 0
MC 155 50 3 0 010
FCJ
COMPANY 151 39 4 3 0 0 0 * +12V
COMPANY 165 40 4 3 0 0 0 *
AT THE 155 73 155 115 0
SADDLE 155 115 0
SADDLE 155 54 0
AT THE 190 60 190 55 0
AT THE 190 55 198 55 0
AT THE 198 28 86 28 0
MC 130 115 0 0 045
MC 165 54 3 0 045
MC 71 28 0 0 073
FCJ
COMPANY 81 33 4 3 0 0 0 *
COMPANY 70 20 4 3 0 0 0 * +12V
MC 71 115 0 0 073
FCJ
COMPANY 71 107 4 3 0 0 0 * 0V
COMPANY 81 125 4 3 0 0 0 *
AT THE 81 28 86 28 0
AT THE 81 115 86 115 0
AT THE 86 115 100 115 0
SADDLE 100 115 0
MC 198 28 0 0 073
FCJ
COMPANY 196 20 4 3 0 0 0 * +12V
COMPANY 208 38 4 3 0 0 0 *
MC 198 55 0 0 073
FCJ
COMPANY 208 60 4 3 0 0 0 *
COMPANY 198 47 4 3 0 0 0 * 0V
AT THE 100 35 100 28 0
SADDLE 100 28 0
MC 90 60 1 0 200
COMPANY 79 63 4 3 0 0 0 * Dl
COMPANY 69 68 4 3 0 0 0 * 1N4148
AT THE 90 61 90 55 0
AT THE 90 55 100 55 0
AT THE 90 75 90 115 0
SADDLE 100 55 0
SADDLE 90 115 0
- This reply was modified 7 years ago by Amilcare.
- This reply was modified 7 years ago by Amilcare.
2 October 2019 at 14:35 #6622

farmzone.net
Participant

I got it
Author

Posts

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