The most commonly available and widely used one is a small circuit board that connects above the breadboard and provides power to the voltage rails.
													
																	Breadboard power supply usb 5v 3 3 v. 
									
	
		
	
																	5v 3 3v power supply module for mb102 prototype board breadboard feature. 
																	Pins labeled 5v gnd 3 3v gnd plug directly into the power lines. 
																	3 3v 5v switchable maximum output current 700ma two way independent control can be switched to 0v 3 3v 5v onboard two 3 3v 5v dc output pin note. 
																	Can also output 5v on usb connector and can also take input through usb connector. 
															
													
									
	
		
	
																	Hiletgo 5pcs 3 3v 5v power supply module for mb102 102 prototype breadboard dc 6 5 12v or usb power supply module 4 4 out of 5 stars 129. 
																	6 5 9v dc or usb power supply output voltage. 
																	A very simple breadboard power supply kit that takes power from any usb port and outputs a fuse protected and regulated 3 3v. 
																	Breadboard power supply 5v 3 3v 1a is available to buy in increments of 1 details this breadboard power supply is a companion module which provides 5 v 3 3 v to rails on a solderless breadboard. 
															
													
									
	
		
	
																	The module can take 6 5v to 12v input and produces 3 3v and 5v. 
																	It takes the input voltage of 6 5v to 12 v from its barrel connector. 
																	The 3 3v 5v mb102 breadboard power supply module securely fits in a standard 400 or 800 tie points breadboard it also features reverse polarity protection the module can take 6 5v to 12v input and. 
																	Hiletgo 5pcs 3 3v 5v power supply module for mb102 102 prototype breadboard dc 6 5 12v or usb power supply module 5pack 9v battery clip with 2 1mm x 5 5mm male dc plug for arduino by corpco corpco mb102 breadboard power supply module 3 3v 5v for arduino board solderless breadboard. 
															
													
									
	
		
	
																	Buy geebat mb102 breadboard power supply module 3 3v 5v for arduino board solderless breadboard pack of 5pcs. 
																	Its a must have product for experimenters those have to test prototype electronic circuits on breadboard or perforated veroboards. 
																	The 1 headers are mounted on the bottom of the pcb for simple insertion into a breadboard. 
																	Mb102 is a 3 3v 5v breadboard power supply module. 
															
													
									
	
		
	
																	5v 3 3 v 12 v breadboard power supply modules are getting very popular in recent times and there are many firms providing solutions depending upon the breadboard type. 
																	This 3 3v and 5v breadboard power supply module comes with series diode and polarity reversal protection.