THYRISTOR AND TRIAC TESTER

THYRISTOR AND TRIAC TESTER
Occasionally   with these components   doubt arises we work correctly, especially when we are repairing an appliance and also sometimes when we try to recover any items of equipment   already disused or damaged.

The problem is that with the multimeter   We can only check if shorted or open not know   you switch   correctly   in the case of thyristors is unidirectional check   (CC)   and checking the triac   (CA) is bidirectional because the latter are designed to work with alternating current. 
In these compounds the pinout is almost standard (such as MOSFET), for this reason the design of the tester has   arranged order of the socket contacts match the order of most   pin thyristor and triac, this does not mean that some do not have a different order depending   Manufacturer and model checking component, a recommendation should always check the characteristics of the   component and its pin layout   to avoid mistakes.
Within the family of thyristors and triac as with other semiconductor devices exist some   with special characteristics in the case of these components include those with a high sensitivity of shot (Igt in mA), as examples of the common model triac   BTA 10-400 with Igt from among   25 to 50 mA   a thyristor and the other one Igt X0402 with less than 200 μ A. although the latter are less common with that caution should be used when the measure because of its high sensitivity to gate the tester may indicate a component wrong, a simple check of the characteristics of this component can save us problem.

schematics
This   tester despite its apparent simplicity, the vast majority of these components,   indicating their status by two LEDs.
components
D1, 1N4002;

D2, 1N4002;

D3; 5m.m GREEN LED;

D4; 5m.m RED LED;

R1, 470 1/4W;

R2, 470 1/4W;

R3, 470 1/4W;

R4, 470 1/4W;

R5, 100 1w;

SW1; SWITCH WITH PILOT;

SW2, BUTTON, NO

SW3; BUTTON, NO

Tr1; TRANSFORMER 230V - 12V 0.6VA;

BOX ABS 80X50X30 mm

SOCKET, CONNECTOR PC AT RECOVERED

printed circuit




simulation circuit by proteus

 from mediafire.com or restfile.co


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