System to obtain reproducible conditions when soldering contact points on an electronic circuit board uses voltage and temperature measurements

摘要

A circuit board (1) has solder points (A,B) that are connected via resistors (15) and Zener diodes (13,14) to comparators. The voltage applied to the soldering iron tip (9) is compared with a reference value. The temperature is also measured (10). The voltage applied to the solder wire (12) is also compared with a reference value.