Electronic switch selection, you can achieve multiple temperature control, or a plurality of temperature monitoring points, monitoring. OP27 multiple S-type thermocouple circui
t shown in Fig. DG801/802 ultra-low on-resistance (maximum on-resistance of 0.40) of the electronic switch, working at 1.8 to under 5. 5V single-supply conditions. C1, C2. C. Plus logic high, D, between on S, corresponding thermoelectric detection signal even through electronic switches, circuit evacuation OP27 cold junction zoom. OP27 low noise (maximum input noise voltage 3. 8nV/River iz, lkHz), low drift (maximum voltage drift 251JuV) high-speed, precision operational amplifiers. Here connected to a voltage at a magnification of 10,000 voltage amplifier.