A free wheeling diode is used to suppress or eliminate flyback. In ULN2803, the free wheeling diode protects the output.
If you have to ask this question, you shouldn't be dealing with 11,000V
universal logic network
5v
5V
By changing the polarity of the source
By changing the polarity of the source
YES
Why are you asking someone to do your homework for you? Ask your teacher.
ULN2802 ULN2803 ULN2804A 8 NPN Darlington transistors, connected in arrays ideal for logic interface level digital circuits (eg TTL, CMOS or PMOS/NMOS) and higher current/voltage such as lamps, solenoids, relays, print Hammers or other similar loads, a wide range of uses: computer, industrial and consumer applications. All device functions are transiently suppressed by collector output and clamping diodes. The ULN2803 is designed for standard TTL compliance, while the ULN2804 is manufactured to fit 6 to 15V on high-level CMOS or PMOS. The circuit is a reverse output type, that is when a low-level voltage is an input, the output terminal can be turned on to work. For more, The ULN2803 and ULN2804 have the same pinout and current parameters. But there is a little difference. The drive voltage of ULN2803 is 5V for TTL and CMOS circuits. The driving voltage of ULN2804 is 6V-15V for CMOS and PMOS circuits. Reference: The Overview of ULN2804A [FAQ] [ utmel]
A free wheeling diode is used to suppress or eliminate flyback. In ULN2803, the free wheeling diode protects the output.
If you have to ask this question, you shouldn't be dealing with 11,000V
universal logic network
Depending on the application and other factors, it will TYPICALLY be best to use a transformer. If it's a low current application, you can purchase a small 5V power supply transformer for under $20.00, US.
Explain the workin principle of uln and its abbreviation
you need a DAC, not just a buffer.
The answer is 1 + 5v.