Hello,
I am using a 555 timer to open and close a 2W solenoid valve.
To give enough power to the small solenoid - I want to use a transistor as a switch (completely ON/ completely OFF) - so it takes its power of the main 9V (battery) supply.
Could somebody suggest a transistor and resistor I should use - coming out of PIN# 3 on the 555.
Many thanks - Angus
I am using a 555 timer to open and close a 2W solenoid valve.
To give enough power to the small solenoid - I want to use a transistor as a switch (completely ON/ completely OFF) - so it takes its power of the main 9V (battery) supply.
Could somebody suggest a transistor and resistor I should use - coming out of PIN# 3 on the 555.
Many thanks - Angus