|  | 
			
				| 
			
				|   | 
				Full-wave rectifier 
				Introduced in 
				1932 
				
					
						| 1 | 2 | 3 | 4 | base |  
						| f | a1 | f | a2 | B4 |    
				
					
						| Vf | Af | Va | mAa | series res. | cap. (max) |  
						| 4 | 2 | 500 | 120 | 50Ω (500V) 30Ω 
							(300V) | 32μF |    
					
						
							| Equivalent | 1561, 460BU, 75301, 
							APV4, D5-125B, DW3, 
							G2004, G2504, G4200, 
							KL75301, P4002, PV4200, 
							R3, R4200, R561, RGN2004,  RO431, U14, 
							V22, 
							V480, 
							VG3016, WE52 |  |  |  |