Pages: [1]   Go Down
Author Topic: Transistor Based Siren.  (Read 410 times)
0 Members and 1 Guest are viewing this topic.
Offline Offline
Edison Member
*
Karma: 20
Posts: 2102
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset




That circuit would make perfect sense to me if you swapped the speaker for an LED or some other light source, is this circuit even oscillating to make
the speaker "whale" ?

Logged

Offline Offline
Sr. Member
****
Karma: 9
Posts: 254
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

It is probably supposed to be a piezo buzzer, they will beep with just DC applied
Logged

Manchester (England England)
Offline Offline
Brattain Member
*****
Karma: 505
Posts: 31332
Solder is electric glue
View Profile
WWW
 Bigger Bigger  Smaller Smaller  Reset Reset

It is probably supposed to be a piezo buzzer, they will beep with just DC applied
In which case why have the transistors at all.

The capacitor is providing feedback and making an oscillator.
Logged

Valencia, Spain
Online Online
Faraday Member
**
Karma: 118
Posts: 4537
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

That circuit would make perfect sense to me if you swapped the speaker for an LED or some other light source, is this circuit even oscillating to make
the speaker "whale" ?

You probably needy a bigger battery to producing large marine mammals from a speaker...

Logged

No, I don't answer questions sent in private messages...

Offline Offline
Edison Member
*
Karma: 20
Posts: 2102
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

"whaling siren circuit"

almost tempted to build one...
Logged

Pages: [1]   Go Up
Jump to: