Abstract: Leads (22) of an electrical component (20) are positioned within and extend through a plurality of apertures (74) formed through a substrate (54). The substrate (54) includes a circuit (56) formed on one major surface thereof and a plurality of contacts (76) mounted thereon which is electrically connected to the circuit (56) and which overlaps a portion of the appropriate one of the plurality of apertures (74) formed therethrough. A lead pusher (32) moves the leads (22) into engagement with the contacts (76). Thereafter, free ends of the leads (22) are moved beyond a point of engagement between the leads and the contacts (76) so that the lead is flexed to insure a firm engagement between the leads and the contacts.

Abstract: A hybrid integrated circuit (121) is coupled to an adapter circuit (151) to facilitate trimming of film resistors (126, 127, 128 and 129) formed on the hybrid circuit. The adapter circuit (151) includes a plurality of safety resistors (156, 157 and 158) which are to be selectively added in series with the film resistor (126) to be trimmed. A computer (145) facilitates the measurement of (1) the resistance of the untrimmed film resistor (126) and (2) the gain of the hybrid circuit (121). Depending upon the measured gain, the safety resistors (156, 157 and 158) are selectively added in series with the film resistor (126) to establish a basic resistance value. Thereafter, the film resistor (126) is trimmed by a laser (144) until the resistance value of the film resistor (126) is equal to the basic resistance value. Other safety resistors are used during the trimming of the remaining resistors (127, 128 and 129).