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Tire Pressure Monitoring TPM System - Microchip Application Note Published
14-Oct-02 (app note added 2/06) |
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Tracking transmitter - (electronic design added 02/03/04) |
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Tracking Transmitter - This beeping bug can be attached to anything from a glider
to a pot-plant and you can track it with an FM radio. …(circuit added 02/07) |
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Tracking Transmitter reconnsworld - (electronic circuit added 9/03) |
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Transmitter Accurately Transfers Voltage Input - 05/15/03 EDN-Design Ideas:
When you connect remote sensors to a central process controller, a simple, robust, and
commonly used interface is the 4to 20-mA loop. The advantages of this current loop
include the simplicity of just two twisted wires that share both power and signal, the
loop's high noise immunity in harsh environments,.....(design idea added 9/03) |
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Transmitter FM 45W with valve - designed by Kyriakos Kontakos (schematic /
circuit added 05/06/07) |
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Transmitter senses triple relative humidity figures - 09/26/02 EDN-Design Ideas:
The circuit in Figure 1 is a triple, relative-humidity sensor and radio transmitter.
Sensors 1 and 2 form two gated oscillators with natural frequencies of 10 and 5 kHz,
respectively, at relative humidity of 50%. The gated oscillators use variable
resistances R2 and R3, respectively. Together, these two oscillators generate FSK-modulated
outputs at output of IC1B, Pin 6.....(design idea added 1/05) |
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Transmitter using LM317 - (electronic circuit added 7/03) |
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Transmitters 27 & 303MHz - In this discussion we cover 27MHz transmitters and
receivers as found in remote control cars, aeroplanes, walkie talkies and some of the
older-style garage door openers. We have provided a number of circuits so you can work
out the best type for your application and these circuits will also help you
understand which components are critical and which components...(design added 04/09) |
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TV Transmitter - A VHF band TV transmitter using negative sound modulation and PAL
video modulation. This is suitable for countries using TV systems B and G….(circuit
design added 08/08/08) |
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Two Transistor Circuit Replaces IC #2 - Linear Technology's recently introduced
LTC4300 chip buffers I2C clock and data lines to and from a hot-swappable card. This
task is difficult because the IC must work bidirectionally (added 8/03) |
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Two Transistor FM Transmitters - (circuit / schematic design added 6/06) |
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Two Valve 40m CW Transmitter - (electronic design / schematic added 2/05) |
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Unusual Frequency Dividers - (electronic circuit added 7/03) |
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VERONICA FM Transmitter - The Veronica is an easy to build and tune transmitter
for the FM band. It's known for it's stability and clean signal, does not use any IC's
or similar specialized parts, and it has a built-in tuning aid that makes it possible
to tune it with no extra equipment. It's available in two versions, 1 and 5 watts.
(electronic circuit added 6/07) |
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Very stable RF bug - (diagram added 05/07) |
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Very stable transmitter than can be carried and move while in use, range is 100-200
meters - (diagram added 05/07) |
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VHF Audio Video Transmitter - Build your own LC Meter and start making your own
coils and inductors. This LC Meter allows to measure incredibly small inductances
making it perfect tool for…(design added 08/08/08) |
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VHF transmitter - ….(circuit design added 04/09) |
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VHF/UHF Prescaler - The recommended Prescaler is ridiculously simple. It consists
of just one IC, a TV tuner prescaler, the Philips SAB6456A, which can divide by 64 or
by 256.... (electronic circuit added 6/07) |
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VHF/UHF TV Modulator - Simple oscillator that generates a frequency in the VHF or
UHF region. The oscillator is modulated with the video signal and the modulated
carrier wave thus generated is fed into the TV set's aerial input via a cable. Then
all that remains to do is tune the TV to the correct frequency....(added 4/02) |
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Video/Audio Wireless Transmitter - (circuit / schematic added 6/05) |
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Video/Audio Wireless Transmitter - circuit diagram and project description (added
5/02) |
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Wireless Doorbell - The transmitter circuit is made up of two building blocks, the
303MHz RF oscillator and the 32kHz crystal controlled oscillator. The 303MHz
oscillator consists of a self-oscillating circuit made up of the coil….(diagram added
05/07) |
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Wireless Microphone (Tony van Roon) - (circuit / schematic design added 6/06) |
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WLW 500KW Transmitter Schematic - (electronic circuit added 7/03) |
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Zero Voltage Drop Heavy Duty Power Supply for SSB - (added 5.07) |
