Heater thermocuple design
Budget: $30 – $250 USD
using basics components like : OPAMPs: LM358 (contains two OPAMPs), TL062 (two OPAMPs, FET
input), TL084 (four OPAMPs, FET input), LM324 (four OPAMPs); zener diodes; BJTs: BC238,
2N3904, BC308, BD135, BD136, JFET: BF245 (with njf symbol in LTSpice, n-Channel, VT=−2.3V),
MOSFET: 2N7000 (with nmos symbol, n-channel, VT=1.6V), red LED, standard resistors,
standard capacitors, K-type thermocouple, 2-pin PCB connector, 10K trimpot. I need a heater controlled by thermocouple
input), TL084 (four OPAMPs, FET input), LM324 (four OPAMPs); zener diodes; BJTs: BC238,
2N3904, BC308, BD135, BD136, JFET: BF245 (with njf symbol in LTSpice, n-Channel, VT=−2.3V),
MOSFET: 2N7000 (with nmos symbol, n-channel, VT=1.6V), red LED, standard resistors,
standard capacitors, K-type thermocouple, 2-pin PCB connector, 10K trimpot. I need a heater controlled by thermocouple