|
Logic Probe MkIIB - Essential for servicing all types of Digital circuits
….(diagram added 05/07) |
|
Logic Probe uses Bicolor LED - 03/13/98 EDN-Design Ideas: (design idea added
03/03/03) |
|
Logic probe with integral pulser function - (schematic / circuit added 05/07) |
|
Logic Probe with Pulse - (Tony van Roon's diagram added 05/07) |
|
Logic Probe with Pulse CMOS - (Tony van Roon's circuit / schematic added 6/05) |
|
Logic Probe(3), Audible, TTL/CMOS - (Tony van Roon's schematic / circuit added
08/09) |
|
Logic Probe3 Audible TTL/CMOS - (Tony van Roon's circuit added 9/04) |
|
Logic PSU with OverVoltage Protection - 6 volt regulated power supply for TTL and
74LS series integrated circuits, includes output Overvoltage fault protection (added
5/02) |
|
Logic Pulser - Has DIP switch for setting output waveform characteristics.
(schematic / circuit added 05/07) |
|
Loop Sensor - Many security systems use a closed loop of wires and switches
arranged so that whenever a door or window is opened, the loop will be broken and the
alarm will sound. An obvious problem is that someone can tamper with the system, short
out the loop, and later on, come back and burglarize the premises...(added 08/07 |
|
LOPIC Logic Probe with Pulser - (circuit added 9/04) |
|
Low cost BER tester measures errors in low data rate applications - 12/05/05 EDN-Design
Ideas: You don't need an expensive pattern generator to produce a PRBS
(pseudorandom-bit-sequence)signal for making elementary BER (bit-error-rate)measurements
in low-data-rate continuous-transmission systems.....(design idea added 05/07) |
|
Low cost current monitor tracks high DC currents - 03/01/07 EDN-Design Ideas:
Oscillator's output tracks current as it varies inductor's core
characteristics.....(design idea added 03/07) |
|
Low cost relative humidity Transmitter uses single logic IC - 11/08/01 EDN-Design
Ideas: The low-cost percentage-relative-humidity radio transmitter in Figure 1
operates in a cold-storage warehouse for vegetable storage at temperatures of 1 to 5
C. It is generally difficult to collect such data from a low-temperature area with
high humidity.....(design idea added 10/03) |
|
Low cost RF sniffer finds 2.4 GHz sources - 11/23/06 EDN-Design Ideas:
Locate interference sources in the ISM band.....(design idea added 12/06) |
|
Low Cost Tamper-Resistant Energy Meter Based on the ADE7761 with Missing Neutral
Function - AN-687 Analog Devices Application Notes (app note added 6/06) |
|
Low Cost Watt-Hour Energy Meter Based on the AD7755 Chinese Version -5/2000 -
AN-559 Analog Devices Application Notes (app note added 6/06) |
|
Low Cost Watt-Hour Energy Meter Based on the ADE7755 - AN-559 Analog Devices
Application Notes (app note added 6/06) |
|
Low Cost Watt-Hour Energy Meter Based on the ADE7757 - AN-679 Analog Devices
Application Notes (app note added 6/06) |
|
Low Noise Amplifier for Phase Noise Measurements - The phase noise of low noise
oscillators and signal sources is usually determined by measuring the audio noise
voltage at the output of the phase comparator in a phase-locked loop. The phase
comparator is typically a low noise doubly-balanced mixer with a phase slope from a
few tenths of a volt per radian to a few volts per radian. The low.... (added 7/03) |
|
Low Power LED Voltmeter - This is a low power voltmeter circuit that can be used
with alternative energy systems that run on 12 and 24 volt batteries. The voltmeter is
an expanded scale type that indicates small voltage steps over the 10 to 16 volt range
for 12 volt batteries and over the 22 to 32 volt(electronic diagram added 6/03) |
|
Low power timer - Low power timer. It can operate with a CR2032 litium battely.
(added 6/06) |
|
Low power Voltage to frequency converter makes a wireless probe for testing an
inductive power supply - 05/26/05 EDN-Design Ideas: Inductive pickup
measures low-power circuit's supply.....(design idea added 11/05) |
|
Low Speed AVR Oscilloscope - A few months ago as I was surfing on the net, I saw
an oscilloscope based on PIC18F2550 microcontroller and a KS0108 controller based
graphical LCD. That was Steven Cholewiak's web site. I had never seen before so
amazing microcontroller, only oscilloscope. That was realy impressive circuit, so I
decided to design something like that but in C language instead of assembly
….(electronic schematic added 11/08) |
|
Low Value Capacitance Meter - This circuit was originally designed to measure the
volume of fluid inside a medical syringe. As designed, it produces a zero
to 5 volt output, corresponding to a capacitance change of about 10 picofarads.
With a digital voltmeter, at its output, it can resolve a capacitance change of 0.002
picofarads or 2 femtofarads. (added 12/04) ….(designed by David A. Johnson) |
|
Low Voltage , High Current Time Delay Circuit - (diagram added 05/07) |
|
LT5528 WCDMA ACPR and AltCPR Measurements - AN99 Linear Technology ACPR (adjacent
channel power ratio) and AltCPR (alternate channel power ratio) are both measures of
spectral regrowth. They are important performance metrics for digital communication
systems that use, for example, WCDMA (wideband code division multiple access)
modulation.....(app note added 2/06). |
|
Lux Meter - This is a simple Lux Meter that is suitable for beginners.
(added 6/06) |
