| 摘要 |
<p>The apparatus provides variable temperature compensation for a transducer detection circuit. The differential emitter follower transistors (T1, T2) have the Wheatstone bridge voltage detection circuit (5) contg. at least two semiconducting extension gauges connected between their common emitters and, at junction (P2), to one side of an alternating voltage source (W), the other side of which is connected to silicon rectifying diodes (D1, D2), each connected to the collector of transistors (T1, T2) respectively and via resistors (R1, R2), of higher impedance than diodes (D1, D2) when conducting, to the bases of (T1, T2) at junction (P1). Junction (P1) is connected to the junction of diodes (D1, D2) and voltage source (W) via a variable resistor (R1) which provides adjustable temp. compensation. Resistor (R4) may be connected between (P1) and (P2).</p> |
