The idea was to make a soft start for your Interskol DP-800 circular saw, with the aim of extending the life of the power tool.
The device reduces starting currents in the windings of the rotor and stator and protects the gear pair of the gear from jerking when starting the tool. Also, due to the fact that the factory wire of my circular saw is relatively short, I decided to build a soft start right into the extension cord.
In this design used:
- Socket company "MAKEL" made in Turkey.
- Power cord with plug.
- Foiled fiberglass.
- Fasteners M3.
- Radio parts according to the scheme.
Of the tools used:
- Drill.
- Soldering iron.
- Thermo-glue gun.
- Screwdriver, wire cutters, etc.
Bike I didn’t invent it, I used a typical scheme for switching on the phase regulator K1182PM1R. The design used low-profile capacitors from old video cards. Therefore, the board is conveniently located in the specified model of the outlet.
Circuit diagram.
The printed circuit board turned out to be 45x25mm in size.
The board is mounted in the socket with two M3 screws.
The mains cable is fixed in the plug of the socket housing using hot melt adhesive.
During installation, the R2 resistor was replaced by two parallel ones with a total resistance of 500 Ohms (therefore, there is a difference in the photo). The time of smooth acceleration of the saw blade is 2-3 seconds.
This device copes with the task I need 100%.
Attention!!! This circuit only works correctly with a power tool without built-in speed controllers and other additional electronics !!!
If you need additional information, write to the post office, I will try to be sure to answer.
Feedback, suggestions and comments are very welcome.
May 2019