Electronic Projects (Model 200 Series)

An ideal project for student, experimentor, or technician. Substitute resistance values quickly and accurately for troubleshooting or designing circuits. Range switch selects LO (15 to 10k Ω) or HI (15k to 10M Ω). Two 12-step rotary switches selection of 24 different values.

Fast, accurate selection of 9 different capacitance values from .0001 to .22 microfarads. Very useful project for troubleshooting or designing circuits. Capacitors are rated at 400V or higher.

• Test electronic and electrical circuits
• Audible resistance indicator
• 555 IC & piezo transducer
• Easy-to-understand student manual

This handy tester is an excellent beginner's project. The clear, well-illustrated manual makes learning electronics fun and easy. Step-by-step assembly instructions ensure that every student will have a successful experience.

The student learns the history, operation (monostable and astable) and applications of the versatile 555 Integrated Circuit, as well as piezo transducers, by performing experiments while assembling the kit.

The tester checks circuits for shorts, low resistance, high resistance, and opens. An audio tone varies in frequency with the circuit resistance. Low current flow ensures that the circuit under test will not be damaged. Requires one 9V battery (not included).

Battery: Alkaline 9 Volt (P/N: BAT-9V)

• TTL, DTL & CMOS compatible
• Red, green and yellow LEDs
• Memory and pulse operation
• Powered by circuit being tested
• 1M input impedance

Teaches theory and operation of the Logic Probe. The student performs experiments while assembling the double-sided PCB. 32-page Instruction Book. Use to troubleshoot and analyze digital circuits; check for HI (red), LO (green) and Pulse (yellow). Pulse Memory detects 30nsec pulses. Max. input frequency: 17MHz, max. input voltage: 20V. With rugged plastic case,insulated mini-grabber clips, durable leads and overvoltage protection.

Parts for Audio Circuit (separate LO & HI tones) mount on 214 PCB. With IC & Common Clip Leads (plug onto 214) and durable Storage/Carrying Case

216
with Breadboard

• 20kΩ/V
• 30 ranges
• Test transistor
• Leakage and gain
• Diode and fuse protected
• Mirrored scale
• Comprehensive student manual
• Zero adjust

Accurate, rugged and versatile, the Model 216 becomes a useful piece of test equipment when assembled. Use it to troubleshoot electronic equipment, for laboratory experiments, and to aid in the building of other Graymark projects. This intermediate kit covers all aspects of analog meter theory including current limiting resistors, voltage dividers, diode rectification and meter protection. How meter movements work is also explained. Requires a 9V battery and two AA cells (not included).

• Ranges:
  • DC Voltage: 1, .5, 2.5, 10, 50, 250, and 1000
  • AC Voltage: 10, 50 250, and 1000
  • DC Current: 50µA, 2.5mA, 25mA, 250mA
  • Resistance: X1, X10, X100, X1k and X10k
  • Decibels: -10dB to +50dB in 3 ranges
  • ICEO: 150µA, 1.5mA, 15mA
  • hFE: 0-1000
  • Diode: 150µA, 1.5mA, 15mA
  • Order No. 64616: Transistor Adapter (optional),
    
    

• Full 3-1/2 digit display
• Data hold/peak hold with LCD annunciators
• Transistor test jack
• Short circuit beeper
• 20-range function
• Comprehensive student manual
• Zero reading with zero input guaranteed
• Polarity driver
• Analog to digital conversion
• Frequency counter

The 218DMM is an excellent choice for educational electronic theory and project design. With comprehensive instructions, students will learn digital electronic theory and acquire hands-on skills through step by step assembly procedures. When assembled 218 DMM is a rugged, high reliable measuring instrument that's ideal for electronic maintenance and troubleshooting.

• Ranges:
  • DC Voltage Range: 200mV to 500V
  • AC Voltage Range: 200mV to 500V
  • DC Current Range: 200µA to 10A
  • Resistance Range: 0Ω to 200MΩ