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Ring Phone Flasher

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Ring Phone Flasher - Bljesak telefonskog zvona

For people who do not hear well, or for other reasons do not want to ring the phone
Za osobe koje dobro ne čuju ili iz drugih razloga ne žele zvonjavu telefona
 

Schematic - Šema

Parts - Dijelovi

Part
Dio
Total
Komada
Description
Opis
Substitutions
Zamjena
C1 1 0,47 uF 250V Capacitor  
R1, R2 2 10K 1/4 W Resistor  
R3 1 1K 1/4 W Resistor  
D1,D2 2 20V 1/4 W Zener Diode  
D3 1 1N4148 Diode  
D4 1 1N4007  
Q1 1 2N3904 NPN Transistor 2N2222
U1 1 4N27 Opto Isolator  
RELAY 1 Solid State Or Regular Relay (See Notes)  
MISC 1

Case, Wire, Board

 


English

1. You may need to use a lower voltage zener for D1 and D2.
2. You can use a regular relay instead of a solid state relay, but the arcing across the contacts may destroy it pretty quickly.
3. Be very sure that you have not accidentally connected 220V to the phone line when building and installing this circuit.


Bosnian

1.  Vi ćete možda  morati koristiti niži napon za zener diode D1 i D2.
2.  Možete koristiti obični relej umjesto jednog profesionalnog releja, ali znajte da proboj kroz kontakte može razoriti prilično brzo.
3.  Budite vrlo sigurni da niste slučajno 220V spojili na telefonsku liniju pri izgradnji i instaliranju ovog sklopa.
 

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20/06/1999 - Last modified: 25/07/2014