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1 Second Time Base From Crystal Oscillator (circuitdb): The
schematic above illustrates dividing a crystal oscillator signal by the
crystal frequency to obtain an accurate (0.01%) 1 second time base. Two
cascaded 12 stage counters (CD4040) form a 24 stage. |
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1 Second Time Base from Crystal Oscillator: (electronic circuit) |
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10 Hints for using Your Power Supply to Decrease Test Time (5968-6359E):
Learn ten simple ways to improve your testing capabilities with your
power supplies and electronic loads. Aligent Application Note (app note) |
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100 MHz Clock Solution for Desktop Computers: Pericom
Semiconductor Application Brief # 021 (app note) |
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2 Transistor Atomic Frequency Standard: (schematic) |
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2.8 GHz prescaler keeps cost down: 07)/20/00 EDN-Design Ideas |
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28 LED Clock Timer 72 LED Clock: programmable clock Timer circuit
that uses individual LEDs to indicate hours and minutes |
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2D3 Nixie clock Schematic: (electronic circuit) |
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30 Nanosecond Settling Time Measurement for a Precision Wideband
Amplifier: AN79 Linear Technology AN79 modifies methods presented
in AN74, permitting verification of 30 nanosecond amplifier settling
times to 0.1% resolution. sampling-based technique used is detailed and
results presented. Appendices cover oscilloscope overdrive issues,
construction of a subnanosecond rise time pulse generator, amplifier
compensation, circuit construction and calibration procedures. |
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4 Bit Binary Clock: (schematic) |
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4 Channel Timer using Atmel 89C4051 and MAX7219 display Driver:
(circuit / schematic) |
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4 Hints for Making Better Microwave Counter Measurements: Agilent
Application Note |
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40 LED Bicycle Light (555 Timer 6 Volt): (schematic) |
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5 to 30 Minute Timer (MIT): (electronic circuit) |
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5 to 30 Minute Timer: (schematic) |
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50 MHz Frequency Counter Voltage Meter and SwR/PWR Indicator:
(electronic Circuit diagram) |
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555 DC-AC Inverter: (circuit / schematic design) |
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555 Go/No Go Tester: (schematic) |
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555 Makes Handy Voltage to time Converter: 02/01/01 EDN-Design
Ideas. The circuit in Figure 1 is a simple, low-cost
voltage-to-time converter using ubiquitous 555 timer chip. You can use
IC's monostable multivibrator as a voltage-to-time converter by
connecting analog-voltage input to charging resistor, R, instead of
connecting R to VCC. With this modification,.... |
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555 One Shot: Basic 555 MonoStable Multivibrator |
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555 Oscillator: (app note) |
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555 Timer #2: (app note) |
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555 Timer 40kHz Infrared Oscillator: (electronic circuit) |
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555 Timer as an A/D Converter: Measure voltages accurately
with a microcontroller using this simple circuit. Includes sample
program for Parallax Basic Stamp |
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555 Timer IC Tester: (schematic) |
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555 timer Mono stable (one shot) circuit: The two circuits
below illustrate using the 555 timer to close a relay for a
predetermined amount of time by pressing a momentary N/O push button.
The circuit on the left can be used for long time. |
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555 Timer MonoStable Circuit using Pushbutton: (circuit) |
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555 Tone Generator 8 Ohm Speaker: (electronic diagram) |
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555-based solar engine: Time-Controlled Solar Engine: a solar
engine design using a 555 timer IC |
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6 Digit 40MHz Frequency Counter Module: Here is design for a very
low cost 6-digit frequency counter module using of shelf components
(and not that expensive 74C926!). The standard circuit will display
directly in Hz (1MHz max), and re is a separate on board divider that
will allow you to display directly in KHz (approx 40MHz max). Because
display reads directly in.... (add 11/05) |
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7 Segment LED Counter: (circuit) |
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72 LED Clock: (circuit) |
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74ACT74 makes Low-skew clock divider: 12/17/98 EDN-Design
Ideas - Serial-data systems often generate an internal clock at
twice data rate for mid-bit sampling or for generating bi-phase codes.
External equipment and some internal processes require a clock that runs
at data rate. Simply dividing twice-rate clock with a flip-flop
generates a data-rate clock that is .... |
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8 Hints for Making Better RF Counter Measurements: Agilent
Application Note |
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80186 timer pins provide general I/O : 08/03/98 EDN-Design
Ideas Intel's (www.intel.com) 80186 is a highly integrated mP
common in embedded applications. It combines 15 to 20 common iAPX86
system components, such as a DMA controller, an interrupt controller,
timers, a clock generator, a bus interface, and chip-select logic on one
chip. Unfortunately, unlike many mCs, it provides.... |
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9 Second Digital Readout Timer: (circuit) |
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9 Second LED Relay Timer: (circuit) |
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A 2.x GHz WiMAX Direct Conversion Transmitter: AN-826 Analog
Devices Application Notes (app note) |
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A Design and Manufacturing Guide for the Lead Frame Chip Scale Package:
AN-772 Analog Devices Application Notes (app note) |
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A GPS receiver based frequency standard: (diagram) |
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Acquisition Times of the ADN2812: AN-757 Analog Devices Application
Notes (app note) |
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Ad-03: Effects of Aperture Time and Jitter in a Sampled Data:
National Semiconductor Application Note (app note) |
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AD9852 DDS schematic: (circuit / schematic ) |
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ADN2812 Evaluation Board: AN-657 Analog Devices Application Notes
(app note) |
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ADN2819 Evaluation Board: AN-636 Analog Devices Application Notes
(app note) This application note describes use of ADN2819
evaluation board. The ADN2819 is a multirate clock recovery,
data-retiming device based on a multiloop PLL architecture. The ADN2819
can recover clock and data at SONET OC-3,OC-12,OC-48,and Gigabit Ernet
data rates as well as 15/14 Forward Error Correction (FEC) .... |
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Amplifier Timer: Turns-off your amplifier when idle for 15 minutes
Fed by amplifier tape-output (circuit / schematic design) |
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Amplifiers perform precision divide by 2 circuit: 02/06/03 EDN
Design Ideas / The classic implementation of a
voltage-halving circuit uses two equal-value resistors. Using 1%
resistors provides a divider output with 2% accuracy. For most
applications, this performance is cost-effective and more than adequate.
However, when you need extreme precision, this approach requires
correspondingly accurate resistors and can become expensive.... |
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An Overview of Pericom's VCXO and Crystal Technology: Pericom
Semiconductor Application Note # 048 (app note) |
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AN-1173: High Speed BUS LVDS Clock DistributionUsing the DS92CK16 Clock
Distribution Device: National Semiconductor Application Note (app
note) |
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AN-1312: Scan Bridge (STA111/STA112) Timing: National Semiconductor
Application Note (app note) |
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AN-1439: Use of the LMV112 to Reduce Reference Clock Interaction in
Handheld Device: National Semiconductor Application Note (app
note) |
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AN-214: Ground Rules for High Speed Circuits: AN-214 Analog Devices
Application Notes (app note) Layout and Wiring Are Critical
in Video Converter Circuits. |
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AN-30: Ask the Applications Engineer-PLL Synthesizers: AN-30 Analog
Devices Application Notes (app note) |
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AN-347: Shielding and Guarding: AN-347 Analog Devices Application
Notes (app note) How to Exclude Interference-Type Noise.
What to do and Why to do it-A Rational Approach |
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AN-349: Keys to Longer Life for CMOS: AN-349 Analog Devices
Application Notes (app note) Here's How CMOS Can be
Protected Against Abuse |
