4 results for ufs found in 0.000 seconds

SM3 2 SM3 2 INTRODUCTION TO THE SM3 The Ramsey SM3 will duplicate the sound of a police siren at a low (200 mw) or high (2 watts) volume depending upon construction. Closing a pushbutton switch will cause the siren to "wail" up in frequency and opening the button will cause it to "coast" down in frequency. You'll find plenty of uses for the SM3. Kids love to play fire truck or ambulance on their bikes and wagons (Mom will appreciate the low volume setting here!) and there are the obvious uses for alarms and alerting. PARTS LIST FOR THE SM3 1 .01 or .02 uf disc capacitor [if .01: marked ...

SM3 4 SM3 4 1. Orient the PC board as shown in the parts layout diagram with the five larger "pad" areas in a row along the bottom. 2. Install C2, 47 uF. Observe polarity. Electrolytic capacitors have polarity markings. Generally, capacitors will indicate the with a black stripe or arrow, while PC boards will usually show the hole. 3. Install R2, 47K (yellow-violet-orange). 4. Install C1, .01 or .02 uF. The holes for C2 are spaced far apart (you'll see why later) so just stretch C1's leads to fit. 5. Install R1, 47K (yellow-violet-orange). 6. Install Q1, green power transistor. The metal back-side ...

SM3 6 SM3 6 MODIFICATIONS HIGHER VOLUME: To increase the volume level, we add a resistor in series with C1 (that's why we have the holes spaced farther apart!) Simply unsolder one end of C1 and connect to R3, 1.5K (brown-green-red) as shown: YELPING SIREN: To make your siren sound like the yelping type (and get a tired pushbutton finger, too!), change C2 from 47 uF to a smaller value such as 5 or 10 uF. Experiment with different values for the right rate. You may find extra capacitors in old radios or other devices. If need be, you can even buy them new at Radio Shack for about 69 a pair! ...

SM3 8 SM3 8 The Ramsey Kit Warranty Please read carefully BEFORE assembling your kit. All Ramsey kits will work if assembled properly. The very fact that your kit includes this new manual is your assurance that a team of knowledgeable people have field-tested several "copies" of this kit straight from the Ramsey inventory. If you need help, please read through your manual carefully, all information required to properly build and test your kit is contained within the pages! 1. DEFECTIVE PARTS: It's always easy to blame a part for a problem in your kit, Before you conclude that a part may be ...