Handheld work apparatus

A handheld work apparatus comprising:

• a work tool;
• a belt drive;
• a drive motor configured to drive said work tool via said belt drive;
• a brake unit configured to act on said belt drive;
• a holding arrangement;
• said brake unit having a braking position and a released position;
• said holding arrangement being configured to hold said brake unit in said released position;
• said holding arrangement including an electromagnet;
• a power source to supply current to said electromagnet during operation of said work apparatus;
• said drive motor being a combustion engine having a crankshaft;
• said power source being operatively connected to said crankshaft so as to generate said current in response to the rotation thereof;
• an additional power source to supply current to said electromagnet;
• wherein said work apparatus has a first threshold rotational speed of said combustion engine whereat said brake unit is shifted into said braking position when the rotational speed of said engine drops below said first threshold rotational speed absent said additional power source;
• and,
• said additional power source is configured to provide a second threshold rotational speed lower than said first threshold rotational speed causing said brake unit to shift into said braking position when the rotational speed of said combustion engine drops below said second threshold rotational speed.