| Author | Message | ||
     steven brierley (Steve10) New member Username: Steve10 Post Number: 2 Registered: 4-2008 |
Question please: I am going crazy, trying to figure out, on how to build a simple "beep circuit". What makes the sound? I just wwant to create a simple loop, with a push button, where I can make a beeping sound ( like the sound of a microwave touch pad). I have batteries, speakers,push buttons, wires, ect. everything I believe I need to make the simple loop, except what acually makes the beep sound itself. please help Thanks, steve | ||
| Theresa Simmons (Theresa) Advanced Member Username: Theresa Post Number: 57 Registered: 1-2008 |
"http://www.allaboutcircuits.com/vol_6/chpt_6/7.html" "http://sound.westhost.com/project22.htm" "http://sound.westhost.com/project86.htm" "http://www.allaboutcircuits.com/vol_6/chpt_5/18.html" "http://www.njqrp.org/quickies/quickie1.html" "http://www.techlib.com/electronics/audiooscillators.htm" "http://www.gregsgold.com/simple.htm" "http://www.4qdtec.com/singen.html" | ||
| steven brierley (Steve10) New member Username: Steve10 Post Number: 3 Registered: 4-2008 |
Does this make the beep sound? "http://www.allaboutcircuits.com/vol_6/chpt_6/7.html" I can make this, but I do not understand where the sound comes from. Can you please explain? | ||
| Patrick (Firewire) Advanced Member Username: Firewire Post Number: 61 Registered: 12-2007 |
Yeah just replace the LED's with a speaker... or you could try this circuit:  Just play with the component's values nothing is critical to get the kind of sound you want, the switch will determine how long you want the circuit to beep, you could use an ne555 timer IC there if you want uniform interval for each beep. | ||
| steven brierley (Steve10) Junior Member Username: Steve10 Post Number: 4 Registered: 4-2008 |
Thank you very much, that's perfect | ||
| Rohan (Digital) Senior Member Username: Digital Post Number: 105 Registered: 3-2008 |
will any transistor do? | ||
| Patrick (Firewire) Advanced Member Username: Firewire Post Number: 62 Registered: 12-2007 |
Yeah any transistor will do, as long as it does the same function... Though transistors have replacement transistor, the pinouts are sometimes rearanged so you have to look for that transistor's "pinouts" to locate where the E (emmiter) B (base) and C (collector) pins are... But I suggest that the only components you experiment with are the two resistors, set the capacitor at .01 uf (ceramic cap). | ||
| steven brierley (Steve10) Junior Member Username: Steve10 Post Number: 5 Registered: 4-2008 |
I tried this curcuit, and I can't get it to work. http://www.allaboutcircuits.com/vol_6/chpt_5/18.html Doesn't the button take the place of the audio detector, and the speaker take the place of the led light? PLease help. (Message edited by steve10 on April 27, 2008) | ||
| steven brierley (Steve10) Junior Member Username: Steve10 Post Number: 6 Registered: 4-2008 |
Also does it matter, which way a resistor is installed? Is there a backward, and forward to it? | ||
| Simon Quellen Field (Sfield) Senior Member Username: Sfield Post Number: 1890 Registered: 12-2004 |
Resistors work either way. But when you have a question about a circuit you found on some other web site, contact that web site with your questions. | ||
| steven brierley (Steve10) Junior Member Username: Steve10 Post Number: 7 Registered: 4-2008 |
The site in question, was listed by someone else on this site, and that site is of no help, but thank you for your response. | ||
| Patrick (Firewire) Advanced Member Username: Firewire Post Number: 74 Registered: 12-2007 |
You could use the 555 timer IC itself as the tone generator instead of using it as the switch for the diagram I gave you, Just search "555 timer tone generator" on google, or if you found a transmitter using a 555 timer circuit, just replace the LED with a speaker which is connected to pin 3 (output) of the 555 timer... You could try these: http://ourworld.compuserve.com/homepages/Bill_Bowden/page10.htm http://www.reconnsworld.com/audio/tonegenerate.gif More diagrams here | ||
| Patrick (Firewire) Advanced Member Username: Firewire Post Number: 75 Registered: 12-2007 |
You could use the 555 timer IC itself as the tone generator instead of using it as the switch for the diagram I gave you, Just search "555 timer tone generator" on google, or if you found a transmitter using a 555 timer circuit, just replace the LED with a speaker which is connected to pin 3 (output) of the 555 timer... You could try these: http://ourworld.compuserve.com/homepages/Bill_Bowden/page10.htm http://www.reconnsworld.com/audio/tonegenerate.gif More diagrams here |
