Circuit arrangement for electrical tool with clutch

A circuit arrangement for an electrical tool with a clutch, comprising:

• (a) a power switch of double-throw type, for assuming a first state for supplying a motor of said tool with electrical power and a second state for making a short circuit for said motor;
• (b) a limit switch of double-throw type responsive to said clutch, for assuming a first state for receiving power source voltage through said power switch when said power switch is in said first state, and a second state in which said power source voltage is not received;
• (c) a switching circuit of double-throw type for assuming a first state normally for supplying said motor with electrical power and a second state for short-circuiting said motor;
• (d) a capacitor connected between said limit switch and said switching circuit for causing said switching circuit to assume said second state only when said limit switch is in said first state and said capacitor is in other than fully-charged state;
• and
• (e) a discharging circuit connected to said limit switch and to said capacitor so that said capacitor is discharged when said limit switch assumes said second state.

A circuit arrangement for an electrical tool with a clutch, comprising:

• (a) a power switch of double-throw type, for assuming a first state for supplying a motor of said tool with electrical power and a second state for making a short circuit for said motor;
• (b) a limit switch of double-throw type responsive to said clutch, for assuming a first state for receiving power source voltage through said power switch when said power switch is in said first state, and a second state in which said power source voltage is not received;
• (c) a switching circuit of double-throw type for assuming a first state normally for supplying said motor with electrical power and a second state for short-circuiting said motor;
• and
• (d) a capacitor connected between a movable contact of said limit switch and ground so as to be charged when said limit switch is in said first state, said capacitor being discharged when said limit switch assumes a second state so as to cause said switching circuit to assume said second state thereof.