|
Cable Tester is Fast and Cheap: 09/24/98 EDN-Design Ideas / (added 3/03) |
|
Calibrate scope jitter using a Transmission line loop: 09/20/01 EDN Design Ideas / (added 1/05)
Digital-clock-period jitter is variation in period of a clock cycle compared with a nominal (average of many cycles) clock period. To accurately measure period jitter using an
oscilloscope, you must subtract oscilloscope jitter from measured jitter. However, oscilloscopes rarely have a jitter specification, so you must determine oscilloscope
jitter. ... |
|
Calibrating the MTA11200 System: Microchip Application Note Published 26-Aug-97 (app note added 2/06) |
|
Calibration of a 3-Phase Energy Meter Board on the ADE7754: AN-624 Analog Devices Application Notes (app note added
6/06) The document describes how to implement calibration of a polyphase meter based on ADE7754 energy metering IC. |
|
Calibration Technique uses Sound: 09/01/98 EDN-Design Ideas / (added 3/03) |
|
Capacitance Meter (nov55): (schematic added 8/03) [file contains multiple circuits scroll to find this one] |
|
Capacitance meter that connects to multimeter: (electronic circuit added 04/05) |
|
Capacitance meter: (diagram added 05/07) |
|
Capacitance meter: (schematic / circuit added 05/07) |
|
Capacitance Meter: Auto ranged capacitance meter. It can measure up to several 100µF in minimum resolution of 0.1pF.
(added 6/06) |
|
CD strobe scope: This is a strobe scope. The disc is rotating but it looks still. (added 10/05) |
|
Cell Cycler Sorting Sires Superior Batteries: 06/23/94 EDN-Design Ideas / (added 3/03) To assemble superior NiCd batteries,
you need to form and match individual cells making up a battery. First, formation takes place in a NiCd cell only after numerous charge-discharge cycles. Second, you must collect voltage
data during se cycles to match up cells having uniform characteristics.... |
|
Christmas Lights Tester: (circuit added 9/04) |
|
Circuit Adapts Signals for Visual Perception: 10/12/95 EDN-Design Ideas / (added 3/03) |
|
Circuit checks consistency of binary addresses: 09/28/95 EDN-Design Ideas / (added 2/06) |
|
Circuit Detects and Disconnects OverVoltages: 04/25/96 EDN-Design Ideas / (added 6/06) |
|
Circuit Detects DC Ringing: 08/17/00 EDN-Design Ideas / (added 2/06) |
|
Circuit detects first event: 05/03/01 EDN-Design Ideas / (added 2/06) |
|
Circuit Detects Loss of 4-20 Ma Signal: National Semiconductor Application Note (app note added 6/06) |
|
Circuit detects reset source: 04/27/00 EDN-Design Ideas / (added 2/06) |
|
Circuit distorts duty cycle for CML inputs: 08/05/04 EDN Design Ideas / (added 10/05) To test a
gigabit-speed data-recovery chip, you need a clock with a controllable duty cycle. Because most pattern and clock generators have a fixed duty-cycle output of 50%, the design may require a
small circuit to distort the duty cycle. The signal with controllable duty cycle drives a standard CML (current-mode-logic) input with on-chip termination resistors.... |
|
Circuit eases three-phase monitoring : 12/17/98 EDN-Design Ideas / (added 2/06) Measuring line-to-line
voltages in a delta-connected three-phase system can present special problems. Because all three lines may be floating several hundred volts above ground, you can not use nonisolated, grounded
oscilloscopes or other single-ended instruments. Special isolation amplifiers are available for oscilloscopes, but they can cost several thousand dollars. You still need to make three
measurements even with proper instrumentation. The circuit in Figure 1 reduces the magnitude of the line-to-line voltages and combines them into one ground-referenced signal (Figure 2) that
you can safely monitor with a grounded oscilloscope.... |