Boiler Control

Boiler Control
The function of this Boiler Control circuit is to control the water temperature in a hot-water heating system. What the idea does is to reduce the boiler temperature as the outside air temperature increases. The op amp is used as a comparator. Thermistor TH2 and R2 form a voltage divider ...

Active Audio Tone Control
The above diagram is the schematic diagram of active audio tone control circuit. The circuit is simple and you can find the its parts easily and very cheap in price. This circuit use Baxandall system and there is no variable resistor to control the level of bass and treble. Actually, ...

Stereo Preamplifier Circuit with Tone Control
Here the stereo preamplifier circuit which featured tone control module. Many times we need to use a simple preamplifier circuit with a few electronic components and easy to built. This circuit uses an IC TCA5550, from Motorola which contains a double amplifier module inside it, and it has special pins ...

Electronic Siren Schematic
This is the electronic siren schematic, built using three ICs: CD4011 NAND gate logic, CD4066 Bilateral Switch and CD4046 Micropower Phase-Locked Loop (PLL). Itis quite simple electronic siren design, low cost and easy to assemble. With this circuit we can create a changing tone siren. The oscillator IC1A-B consists of ...

Honda Civic LX 1990 Control Wiring
Here the Honda Civic LX 1990 car wiring diagram document. The document containing the diagram of: Computer Engine Control (1.6L) (Grids 8-11) Steering Column, A/C & Heat (Grids 20-23) Inst Cluster, Gear Select, Defog Sw, Dome Lt (Grids 24-27) Power Windows, Cruise Ctrl, Interlock Unit (Grids 28-31) Download Honda Civic ...