Summary of 230 VAC Timer
This article describes a Classic AC 230 V Timer project designed to control AC mains loads up to 200 Watts for durations of up to three minutes. Built around the 555 Timer IC and a TRIAC, it features optically isolated input and output, a 12 VDC supply requirement, and onboard tactile switches for start and reset functions. The PCB includes LED indicators, adjustable presets, screw terminals, and four mounting holes.
Parts used in the Classic AC 230 V Timer:
- Classic 555 Timer IC
- TRIAC
- Optical isolator
- Tactile switch (start)
- Tactile switch (reset)
- Preset resistor
- Jumper
- Screw terminal connector
- PCB board
- LEDs (Timer On and Power-On)
Classic AC 230 V Timer project can be used in all application requiring a timer of up-to 3 Minutes to operate or control any AC mains load of up-to 200 Watts. This project is based on the Classic 555 Timer IC, triggering a TRIAC. Input and Output is Optically Isolated.
Specifications
- Supply input 12 VDC
- Mains supply input 240 VAC or 120 VAC ( Read Note for 120V/230V AC)
- Output: up-to 200 Watt
- Optically isolated Input / Output
- Onboard start and reset tactile switch
- Timer On LED
- Preset adjustable and jumper selectable for range
- Power-On LED indicator
- Screw terminal connector for easy mains supply input and load connection
- Four mounting holes of 3.2 mm each
- PCB dimensions 46 mm x 91 mm
For more detail: 230 VAC Timer
- What is the maximum load capacity of this timer?
The output can handle up to 200 Watts. - How long can the timer operate?
The timer operates for up to 3 minutes. - Can I use this project with 120V AC supply?
Yes, the mains supply input supports both 240 VAC and 120 VAC. - Does the project have optical isolation?
Yes, both the input and output are optically isolated. - What type of IC is used as the core component?
The project is based on the Classic 555 Timer IC. - How do I adjust the timing range?
The preset is adjustable and the range is selectable via jumpers. - What voltage is required for the supply input?
The supply input requires 12 VDC. - Are there indicators for power and operation?
Yes, there is a Power-On LED indicator and a Timer On LED.
