| 摘要 |
<p>PURPOSE:To use the same deflecting coil and CRT to inspect chassis of various kinds of apparatus, by providing an impedance converting circuit to change the deflection output for a chassis to be inspected. CONSTITUTION:The deflection output of a chassis 4 to be inspected is supplied to a deflecting coil 5 through an impedance converting circuit 7. The circuit 7 consists of resistances 11 and 13 and inductances 10 and 12 to supply a deflecting current from an output terminal 9 to a vertical deflecting coil 5a or consists of inductances 16 and 17 to supply a deflecting current from the output terminal 9 to a horizontal deflecting coil 5b. These elements are set to desired values to match the resultant impedance to the impedance at the view from the vertical and horizontal output side of the chassis to be inspected, and deflecting currents are supplied to coils 5a and 5b. These resistances and inductances are varied to use the same CRT6 and deflecting coil 5 for all chassis to be inspected.</p> |
