| 摘要 |
1,225,485. Soldering. JOSEPH LUCAS (INDUSTRIES) Ltd. 18 April, 1968 [15 May, 1967], No. 22400/67. Heading B3R. [Also in Division H2] In interconnecting on a printed circuit two components (i.e. devices such as transistors, positioned on the substrate, resistors on the printed circuit and conductors of the printed circuit) a conductor is placed in a slit in a masking device so that the conductor extends between and contacts the components with solder between the conductor and components and the assembly is heated to melt the solder. A voltage regulator for use with an alternator on a road vehicle is made by printing on a substrate 31 a thick film circuit with conductive areas which receive one plate of a first capacitor, one plate of a second capacitor, the collectors of three transistors, the anode of a diode and the anode of a Zener diode. The substrate 31 is placed on a holder 32 and a mask 33 is located on the holder leaving windows to receive the components, solder is printed on the thick film or preformed solder parts are placed in the windows and the components are placed in the windows in contact with the solder. Connections are required from components to the printed circuit and from component to component and to effect these connections a second mask 34 is located on mask 33 by pins 35. Laminµ 37 each having arcuate end portions 37a joined by an intermediate portion 37b are arranged in slits in the mask 34 to extend between components in the mask 33 and areas on the printed circuit. Where the laminµ contact the printed circuit solder can be printed on the circuit and where the laminµ contact a component solder as cream or as an insert is placed between the laminµ and component. The assembly is heated to melt the solder and form connections between the laminµ and components and between the component printed circuit. |
