TREE

Basic circuit of the LM35 are made to control the fan is either used on amplifier that requires automatic cooling. Its use on power amplifier circuit above and only requires DC fan. From basic sensors based on ic and amplifier op-amp is added again to the transistor Q1 to drive the fan. Part List : R1___220K R2___100K R3___3K3 R4___22K R5___1M R6___150R R7___2K2 R8___33R 4W C1___100pF D1___1N4148 IC1__7915 IC2__TL072 IC3__LM35 F1___DC Fan 12V

This can be a complete project on its own - a simple DIY digital thermometer with 7-segment displays and only a handful of parts - the PIC16F88, LM35 and a small number of resistors and capacitors running off a regulated 5v supply. Temperature range - 0 to 150'C Display type - 3 digit multiplexed 7 segment or 3 individual 7 segments Controller: PIC16F88 Programming Language: BASIC Compiler: mikroBASIC PRO for PIC v3.20 Complete code: '''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''...