transistor/diode tester model dt-100 - TechEdu.com

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FEATURESDiode Mode:1. Checks all types of diodes - germanium, silicon, power, lightemitting (LEDs), and zener.2. Indicates the cathode or anode leads of the diode.3. Operates in circuit with resistors as low as 5kW.SCHEMATIC DIAGRAMTransistor Mode:1. Checks all types of transistors - germanium, silicon, power, RF,audio, switching, and FETs.2. Identifies NPN and PNP types, PN or NP junctions.3. High gain circuit, can test transistors in circuits with base orcollector resistors as low as 100W.4. Measures relative beta of two transistors.-1- -6-
DT-100 PARTS LISTResistors 5% 1/4WQty. Symbol Value Color Code Part #1 R14 100W brown-black-brown-gold 1310002 R5, R6 220W red-red-brown-gold 1322002 R1, R10 330W orange-orange-brown-gold 1333001 R13 1kW brown-black-red-gold 1410001 R7 5.6kW green-blue-red-gold 1456001 R12 10kW brown-black-orange-gold 1510001 R8 18kW brown-gray-orange-gold 1518002 R2, R3 33kW orange-orange-orange-gold 1533001 R9 47kW yellow-violet-orange-gold 1547001 R11 100kW brown-black-yellow-gold 1610001 R4 330kW orange-orange-yellow-gold 1633001 R15 100kW Variable Potentiometer 192611CapacitorsQty. Symbol Value Description Part #1 C6 0.001mF (102) Discap 2310363 C2, C3, C5 0.01mF (103) Discap 2410312 C1, C4 10mF Lytic 271045SemiconductorsQty. Symbol Value Description Part #1 D1 1N4001 Diode 3140011 Q5 MPS A70 Transistor 3200704 Q1 - Q4 2N3904 Transistor 3239041 IC1 555 Integrated Circuit 3305555 L1 - L5 Light Emitting Diode 350002Qty. Description Part #1 PC Board 5111001 Switch Push Button 5400012 Switch DPDT 5411111 Battery Snap 5900981 Panel Front 6141001 Knob 6220091 Case 6232405 Spacer LED 6241114 Screw 4-40 x 1/4” 6414301 Nut Pot 7mm 6441011 Flat Washer 6451014 Nut 4-40 644400MiscellaneousQty. Description Part #1 Lockwasher 5/16” Int. 6461011 Socket 8-Pin IC 6640081 Transistor Socket 6645001 Clip Black 6800011 Clip Red 6800021 Clip Green 6800031 Clip Yellow 6800041 Wire Black 20 ga. 8131101 Wire Red 20 ga. 8132101 Wire Yellow 20 ga. 8134101 Wire Green 20 ga. 8135101 Wire Blue Solid 22 ga. 814620OPERATING INSTRUCTIONSThe DT-100 is a dynamic transistor and diode tester. It features incircuittesting and polarity indicators for both transistors anddiodes. To activate the DT-100, remove the four front mountingscrews and install a fresh 9V battery.Diode Testing1. Place the switch in the diode position.2. Connect the diode to the red and black leads.3. Push in the test switch. One diode LED should blink and identifywhether the cathode or anode is connected to the diode (red) lead.4. If both LED lamps blink, then the diode is shorted.5. If neither LED lamps light, then the diode is open.Transistor Mode:The DT-100 can measure transistors in or out of circuit.identify NPN or PNP by a simple adjustment.Transistor Testing - Out of Circuit1. Place the switch in the transistor position.It will2. Place the transistor in the socket or attach it to the C, B, and Eleads.3. Push in the test button. Adjust the base current control so thatthe OK LED lights up. This indicates a good transistor.4. If the OK lamp doesn’t light, adjust the base current control sothat either the NP or PN LED lights up. This happens at theminimum or maximum position of the control setting. This willindicate transistor type. Place the switch to the NPN position ifthe NP lamp lights up, or place the switch to the PNP position ifthe PN lamp is lit.-5-5. If no lamps light up, then the transistor is open or we have notidentified the base lead. Repeat assuming another lead at thebase.-2-
Page 1: TWO YEAR WARRANTYAll Elenco models

transistor/diode tester model dt-100 - TechEdu.com

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