Related Manuals for Elenco Electronics DT-100
Summary of Contents for Elenco Electronics DT-100
- Page 1 TRANSISTOR/DIODE TESTER MODEL DT-100 Lesson Manual ELENCO ® Copyright © 2012, 1988 REV-G 753115 Elenco ® Electronics, Inc. Revised 2012...
- Page 2 FEATURES Diode Mode: 1. Checks all types of diodes - germanium, silicon, power, light emitting (LEDs), and zener. 2. Indicates the cathode or anode leads of the diode. 3. Operates in circuit with resistors as low as 5kΩ. Transistor Mode: 1.
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Page 3: Diode Testing
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. It will identify NPN or PNP by a simple adjustment. Transistor Testing - Out of Circuit 1. - Page 4 100Ω. Simply follow the previous procedure for testing out of circuit transistors. Do not apply power to the circuit of the transistor or diode under test. The DT-100 will supply the necessary power. CHECKING OUT YOUR TRANSISTOR/DIODE TESTER The following is a simple procedure for testing your DT-100.
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Page 5: Theory Of Operation
THEORY OF OPERATION Note the schematic diagram on page 6. The test transistor in this circuit is an NPN. Adjusting the variable resistor will cause the NPN LED to light up indicating that the base current is flowing. The output of the test transistor is fed to amplifiers Q2 and Q3. - Page 6 DT-100 PARTS LIST Resistors 5% 1/4W Qty. Symbol Value Color Code Part # 100Ω brown-black-brown-gold 131000 R5, R6 220Ω red-red-brown-gold 132200 R1, R10 330Ω orange-orange-brown-gold 133300 1kΩ brown-black-red-gold 141000 5.6kΩ green-blue-red-gold 145600 10kΩ brown-black-orange-gold 151000 18kΩ brown-gray-orange-gold 151800 R2, R3 33kΩ...
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Page 7: Schematic Diagram
SCHEMATIC DIAGRAM... -
Page 8: Two Year Warranty
TWO YEAR WARRANTY All ELENCO ® models are guaranteed for two full years on all parts and service. For the first 3 months, your transistor/diode tester is covered at absolutely no charge. For the remaining 21 months, a nominal service charge is required to cover shipping and handling.