Build a Power Failure Alarm. A power failure alarm can alert you while you are asleep that you just experienced a failure so you can make plans or correct things.
Item # 10 - 14 - 1 Cost >>$2.00 S & H *** U.S.A. >> $2.00
More Info OR,
Build a Portable Fire Alarm. Activated by moving the slide switch to the 'On' position. The thermostatic switch then connects the battery to the silicon-controlled rectifier when room temperature reaches
135 degrees F.
One page ( 1 sheet - front only ).
Item # 10 - 14 - 4 Cost >>$1.00 S & H *** U.S.A. >> $2.00
Build a Plug-In Electric Power Control. It plugs in directly to any wall outlet, which means that when you're not using it in the shop you can take it anywhere in the house to serve as a light dimmer, a temperature control for an electric heater - or as a speed control for kitchen appliances.
Item # 10 - 14 - 2 Cost >>$2.00 S & H *** U.S.A. >> $2.00
More Info OR,
Build an FM Signal Booster. Can make stations that sound weak seem as if they are just around the corner - bring in some stations you were never able to receive before.
Two pages ( 2 sheets - front on each sheet )
Item # 10 - 14 - 5 Cost >>$1.50 S & H *** U.S.A. >> $2.00
Build an Experimental Transistor Breadboard. The board described in these plans builds up the following circuits: Water Detector, Music Maker, Light Detector, Continuity Checker, Code-Practice Oscillator, Transistor & Diode Checker, Metronome and Alarm.
Four pages ( 2 sheets - front and back on both sheets )
Item # 10 - 14 - 3 Cost >>$2.00 S & H *** U.S.A. >> $2.00