The protection diodes... the technical term is flyback diode. Was thinking about it after I posted. 1N4003 is a better choice as they are rated at 200v, not 50v like the 1N4001 which I normally use when driving relays from 5v logic levels.
 

Similar threads

OFFICIAL SPONSORS

Electrical Goods - Electrical Tools - Brand Names Electrician Courses Green Electrical Goods PCB Way Electric Underfloor Heating Electrician Courses Heating 2 Go Electrician Workwear Supplier
These Official Forum Sponsors May Provide Discounts to Regular Forum Members - If you would like to sponsor us then CLICK HERE and post a thread with who you are, and we'll send you some stats etc

Advert

Daily, weekly or monthly email

Thread Information

Title
Veg oil system control design help.
Prefix
N/A
Forum
Auto Electrician Forum
Start date
Last reply date
Replies
20

Advert

Thread statistics

Created
Wheresthedog,
Last reply from
SparkyChick,
Replies
20
Views
3,789

Advert