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Pager Testing Using the 8648A with an Internal Pager Encoder, Option 1EP - Agilent
Application Note (added 6/06) |
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PAL/NTSC Video Text Generator - Perfect low cost solution for: * New video
security installations * SSTV transmitters * Amateur video * Existing installed
security installations * Scientific experimentation monitoring * and any other
application that needs the time and date recorded on an image!
.(electronic schematic
added 11/08) |
|
Palace TE-16A transitorized Test Oscillator manual w/schematic - (added 07/07/07) |
|
Paralleling RMS Converters Speeds Settling - 05/26/94 EDN-Design Ideas: An
RMS-to-dc converter requires an output lowpass filter, which sometimes leads to overly
long settling times. Paralleling two converters reduces the circuit's settling time
signal without increasing conversion errors Fig 1. The circuit in Fig 1 monitors 50-Hz
mains.....(design idea added 3/03) |
|
PC hardware monitor reports the weather - 01/18/01 EDN-Design Ideas: You
usually use PC hardware monitors to keep a close eye on power-supply voltage levels,
the speed of system cooling fans, and even the temperature of the CPU. Until fairly
recently, this level of system monitoring was reserved for high-end servers
running.... / (adds 08/05) |
|
PCB VSWR Bridge - (schematic added 8/03) |
|
PC's serial port controls programmable sine wave generator - 09/01/06 EDN-Design
Ideas: Audio-frequency signal source uses few components.....(design idea added
10/06) |
|
Peak Reading Audio Level Meter - indicates peak audio response on an analogue
meter, similar to a tape recorder recording level meter (added 6/06) |
|
Peak-reading meters - (circuit / schematic design added 6/06) |
|
Perform PSRR testing with analyzers having no DC bias ports - 07/19/07 EDN-Design
Ideas: A simple test setup sums the output of an analyzer and a dc bias to test
the RSRR of a DUT.....(design idea added 9/08) |
|
Performance Verification of Low Noise Low Dropout Regulators - AN83 Linear
Technology In an increasing trend, telecommunications, networking, audio and
instrumentation require low noise power supplies. In particular, there is interest in
low noise, low dropout linear regulators (LDO). Establishing and specifying LDO
dropout performance is relatively easy to do. Verifying that a regulator meets dropout
specification is .... |
|
pH meter with calibration -
.(circuit design added 06/09) |
|
Phantom Power Battery Test Circuit - LED will light when battery is over42 volts
(added 5/02) |
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Phase Meter Operates to 10 MHz - 07/04/96 EDN-Design Ideas: (design idea
added 6/06) |
|
Philips GM 3150 oscilloscope pictures, brochure, schematic - (circuit added
04/05/06) |
|
Philips GM 3152 oscilloscope pictures, brochure, schematic - (circuit added
04/05/06) |
|
Philips GM 5654 oscilloscope manual w/schematic (nl) - (circuit added 04/05/06) |
|
Philips GM 5655/01 oscilloscope manual w/schematic (nl) - (circuit added 04/05/06) |
|
Philips GM 6012 AF Millivoltmeter manual w/schematic - (circuit added 04/05/06) |
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Philips GM 655/03 oscilloscope manual w/schematic (nl) - (circuit added 04/05/06) |
|
Philips GM 7633/01 "Cartomatic" III tube tester schematic - (added 07/07/07) |
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Philips PW 4029 regulated power supply schematic - (circuit added 04/05/06) |
|
Phone Busy Indicator -
.(design added 06/09) |
|
Phone line Voltage monitor meets FCC specs - 08/19/04 EDN-Design Ideas: When
you design equipment that interfaces to a phone line, it is often desirable to be able
to monitor the dc voltage on the line. This ability can be useful, for example, to
determine whether a line is in use before attempting to go off-hook and possibly
interrupting.....(design idea added 1/05) |
|
PIC Frequency Counter - Programmable frequency meter with PIC16F84 and UPB1505
prescaler (circuit added 8/06) |
|
PIC Logic Probe with Pulser - (electronic schematic / circuit added 4/02) |
|
PIC14C000 Calibration Parameter Theory and Implementation - Microchip Application
Note Published 26-Aug-97 (app note added 2/06) |
|
PIC16F84A 3.5GHz LCD Frequency Counter - This Auto Ranging PIC16F84A Frequency
counter counts up to 35-40Mhz and has two separate input BNC connectors. A pre-scale
chip from Nec/CEL may be added with Divide by 256 counters to achieve 3.5GHZ frequency
measurements.
.(electronic schematic added 11/08) |
|
PIC16F877 APRS Weather Station - Weather Station is PIC16F877A based and has a
4x20 LCD, a data logger output and accepts 1Wire wind instrument. It has a built-in
APRS TNC. Connect it to your portable rig thru a DIN5 connector and you have a true
portable weather station.
.(electronic schematic added 11/08) |
|
Picoammeter circuit with 4 ranges -
.(circuit design added 08/08) |
|
Picoampere Leakage Tester - Here is a simple two-terminal picoampere leakage
tester for testing diodes, JFETs and other semiconductors. The tester applies a
variable voltage (0 to -4 volts) to one terminal of the component and measures the
.(electronic design added 6/07) |
|
Pink Noise Generator for Audio Testing (Aaron Cake) - For loudspeaker and room
acoustics testing ((electronic Circuit diagram added 03/03/03) |
|
Polarity Detector (Aaron Cake) - This tester can be used to check the polarity of
any power source, and is therefore very useful when installing automotive equipment,
alarm systems or anything else you can think of. Because this circuit is so simple and
cheap, even frying one with an over voltage is not a big deal.... (added 6/05) |
|
Polonium Pen - Recent events point to the need for a simple device for testing
cocktails and beers for excessive quantities of polonium. The Polonium Pen is a
pocket-sized ion chamber with LED readout that is perfect for the job. Simply hold the
Polonium Pen over your drink and, if the LED lights up, order something else....(added
08/08/08) |
|
Power Chopper Tester - (Circuit added 05/07) |
|
Power Factor Meter - (schematic added 8/03) |
|
Power Loss Indicator - Dave Campbell designed this clever circuit. It uses
two neon lamps to indicate if power to a 120vac appliance had been interrupted.
.(designed by David A. Johnson) |
|
Power-up Trouble Shooting - Microchip Application Note Published 26-Aug-97
(app note added 2/06) |
|
PRBS generator runs at 1.5 Gbps - 03/29/07 EDN-Design Ideas: FPGA and
serializer generate fast sequences to test communications links.....(design idea added
04/07) |
|
Precision Ac Peak Detector - This unique circuit uses a very inexpensive voltage
comparator to form a peak detector. The DC voltage produced tracks the positive peak
of the input signal. It works from about ten millivolts to about 10 volts peak
to peak. The maximum frequency is about 150KHz.
.(designed by David A. Johnson) |
|
Precision Audio Frequency Peak Detection Probe - for use with a digital voltmeter
(added 9/04) |
|
Precision Digital Altimeter - The current concept incorporates a wireless
transmitter and receiver and is thought to be used for remote controlled airplanes or
appliances with two separate parts. In other words, we have one dedicated transmitter
(acquisition, filtering) and one dedicated receiver part (user-interface, look-up
table, calibration, storage), capable of being connected.... (added 4/05) |
|
Precision Fullwave Rectifier - I have used this handy circuit many times. It
accurately converts an AC signal into pulsing DC, which can be filtered to provide an
average of the input voltage. It works from millivolts to volts. The
circuit shown requires a stable +5v reference if a single power supply is used.
.(designed by David A. Johnson) |
|
Precision Wideband Current Probe for LCD Backlight Measurement - DN101
Design Notes (Linear Technology) (app note added 1/06) |
|
Procedure for DDR Clock Skew and Jitter Measurements - Pericom Semiconductor
Application Note # 028 (app note added 2/05) |
|
Procedure Tests Transducer - 03/01/96 EDN-Design Ideas: (design idea added
2/06) |
|
Pulse Generator Verifies Test Setups - 05/26/94 EDN-Design Ideas: Verifying
the rise-time limit of wideband test-equipment setups is a difficult task. In
particular, you must often know the "end-to-end" rise time of an oscilloscope/probe
combination to ensure measurement integrity. Fig1s circuit provides an 800-psec
pulse.....(design idea added 6/06) |
|
Pulse Reading Logic Probe solorb - (electronic diagram added 6/03) |
|
Pulsed LED Test Circuit - This circuit is designed to test visible and infrared
LEDs in pulsed mode operations. It can drive the LED with peak currents in excess of
10 amps. A light detector nearby can monitor the response time and intensity of the
LED under test.
.(designed by David A. Johnson) |
|
Pulse-Generator Signal-Tracer - Dual-purpose test-instrument Very simple
circuitry, 1.5V Battery-operated (added 9/04) |
|
Pump Motor Monitor - This circuit can turn on a light or sound a beeper, whenever
an AC line powered pump motor turns on. It is designed to detect the motor
current using a small inductor placed on the outside of the motors power cable.
No direct wire contact is needed. (added 12/04)
.(designed by David A. Johnson) |
