Editing Driving Large Loads with the Arduino
Jump to navigation
Jump to search
Warning: You are not logged in. Your IP address will be publicly visible if you make any edits. If you log in or create an account, your edits will be attributed to your username, along with other benefits.
The edit can be undone. Please check the comparison below to verify that this is what you want to do, and then save the changes below to finish undoing the edit.
Latest revision | Your text | ||
Line 44: | Line 44: | ||
== Transistor Low Side Switch == | == Transistor Low Side Switch == | ||
− | + | The following is for the old time standard bipolar transistor. This type of transistor is basically a current amplifier, it takes an input current and produces a larger output current, this output current is largely independent of the supply voltage so the transistor can switch large voltages as well ( not too difficult up to 100 volts ). The amplification of current can be a factor between say 10 to 1000 ( the later for so called darling ton transistors ). Here is the same circuit we have looked at for the relay, we are considering the relay as the large load. | |
− | + | ( [[http://www.opencircuits.com/Basic_Circuits_and_Circuit_Building_Blocks#Relay_with_Diode_Snubber | Relay with Diode Snubber]]) | |
− | * | + | Some characteristics: |
+ | |||
+ | *Useful ( with simple circuits and common components ) for currents from a max of a few amps and voltages of 10's of volts. | ||
+ | *Can be very fast, into the Mega Hz. | ||
+ | *Can be very cheap at the low end. | ||
+ | *Small, simple. | ||
+ | *Some integrated circuit drivers like the are basically multiple transistor low side switches. | ||
== Transistor ( fet, field effect transistors ) == | == Transistor ( fet, field effect transistors ) == |