An air conditioner circuit and temperature control unit typically consist of several components, both in terms of electronic control and mechanical parts. Here's a breakdown of the key components you might find in such systems:

Electronic Control Components:

1. Thermostat: This is the component that senses the ambient temperature and sends signals to the air conditioner to turn on or off based on the desired temperature set by the user.

2. Temperature Sensors: These sensors are used to measure the temperature of the air inside and outside the conditioned space. They provide feedback to the control unit for accurate temperature regulation.

3. Microcontroller or Microprocessor: The brain of the control system, responsible for processing input from sensors, executing control algorithms, and managing the operation of the air conditioning unit.

4. Relays: These are electrically operated switches that control the flow of power to various components of the air conditioner, such as the compressor, fan motors, and heaters.

5. Control Panel: The interface through which the user interacts with the air conditioner, typically consisting of buttons, displays, and indicators for setting temperature, mode, fan speed, and other parameters.

6. Inverter (for some models): Inverter technology is used in some modern air conditioners to regulate compressor speed dynamically, resulting in energy savings and more precise temperature control.

Mechanical Components:

1. Compressor: This is the heart of the air conditioning system, responsible for compressing the refrigerant gas to increase its temperature and pressure.

2. Condenser Coil: Located outside the conditioned space, the condenser coil dissipates heat from the refrigerant gas, causing it to condense into a liquid.

3. Evaporator Coil: Located inside the conditioned space, the evaporator coil absorbs heat from the indoor air as the liquid refrigerant evaporates, cooling the air in the process.

4. Expansion Valve: Also known as the metering device, this component regulates the flow of refrigerant into the evaporator coil, controlling the cooling capacity of the air conditioner.

5. Fan Motors: These motors drive the fans that circulate air over the evaporator and condenser coils, facilitating heat exchange and distributing conditioned air throughout the space.

6. Filters: Air filters are used to trap dust, pollen, and other airborne particles, ensuring clean air circulation and protecting the internal components of the air conditioner.

These are some of the key components you would find in both the electronic control system and the mechanical refrigeration system of an air conditioner. The specific configuration and features may vary depending on the type and model of the air conditioning unit.