Wiring Schematic diagram

The circuit is simplicity itself, two different zener diodes, D1 and D2, are attached in series to ensure an accurate zener voltage of 5.96V at 25° Centigrade. The zener voltage will upward thrust through 20 mV for each stage Centigrade upward thrust in temperature.
The voltage stage is comparable to the temperature of the heat-sink is  when compared with two reference volt- a long time through IC1 and lC2. when the temperature reaches 50° Centigrade the output of lC2 is going high so T3 behaviors and causes D4 to gentle and on the same time D5 is extinguished through T4.
At or above 75° Centigrade the output of  lC1 is high and T2  then behavior to make D3 gentle and D4 extinguish. beneath customary stipulations, that may be, considering a heat-sink of enough cooling house, a temperature of 75° Centigrade seriously isnt reached. Parent 2 displays the Pd/PO (max) relation among the facility dissipation of a ciass B amplifier and its effective energy output PO (max) below customary condictions. The pressure signal is a sine wave. The effect of the quiescent present on the dissipation has been ignored. its noticed in parts checklist