|
CB receiver - Tendency of catering: + 12V DC; Frequency of reception
at AM: ~27MHz …. |
Circuit Detects Current Pulses - 01/06/94 EDN-Design Ideas....The pulse
detector provides a visible indication of positive and negative current pulses. The
pulses amplitudes can vary from20 to150 mA. The pulses durations can range from10 to40
msec, and their repetition rate can span40 to180 pulses/minute.... [Design Idea by
Richard McGillivray, Grey Bruce Regional Health Centre, Owen Sound, Ontario, Canada] |
|
[_OLD-ads-dont_upload/OLD I-ADS from web/ad-djandassoc.htm] |
|
Classic detector enables Low cost receiver - 01/06/94 EDN-Design
Ideas....Using modern discrete JFETs and ICs, you can build a low-cost
super-regenerative receiver that has �V-level sensitivity at VHF and above. Such
receivers also boast very low parts counts and low power consumption.
Super-regenerative detectors are practical for wideband FM reception.... [Design Idea
by Charles Kitchen, Analog Devices Inc, Wilmington, MA] |
CLC5526/CLC5956/CLC5902 Diversity Receiver Chipset - National Semiconductor
Application Note (app note added 2/06) |
Compact 20 14 MHz direct conversion receiver - amateur radio construction
projects…. [from Peter Parker's website] |
Comparing EIA-485 & EIA-422-A Line Drivers & Receivers in Multipoint Applications
- National Semiconductor Application Note (app note added 2/06)
|
Crystal Pulling - ….must register on this site.... [Published in Elecktor
July/August 2010] |
Crystal Radio - This is a generic circuit, the first true radio receiver in
history. Description: Crystal radio requires no power supply to operate because it
uses energy from the signals it receives. Performance is like one should expect poor.
Nevertheless, .…. (added 10/05) |
Crystal Radio (Aaron Cake) - RF Receivers & Receiver Circuits Crystal Radio
(added 5/02) |
Crystal Radio RF Amplifier - One of the best places to add a transistor to a
simple crystal radio is at the front end in the form of an RF amplifier. The circuit
below is a simple but effective amplifier which will give surprising performance
improvement. This amplifier.... |
Crystal radio with Amplifier - An improved crystal radio with a two-stage
audio amplifier. The 2N3904 (or any other general-purpose NPN) acts as a preamplifier
while the LM386 boosts the signal high enough to drive low impedance Walkman
headphones or perhaps even a small speaker. (added 10/05) |
Crystal Set that Requires No Antenna - amateur radio construction projects….
[from Peter Parker's website] |
|