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RF (Radio
Frequency) Transmitter
Circuits, Page 4
RF (Radio Frequency)
Transmitter: #'s
A - F
E - O
P - Z
Last Updated on:
Friday, March 12, 2010 12:07 PM |
| Circuits Designed
by Dave Johnson, P.E. : |
Plastic Pipe Finder
I used this circuit once to track down the location of a plastic pipe, buried
underground. It transmits a weak RF signal, which can be picked up by a portable
AM radio from about 6 feet away. |
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Links to electronic circuits, electronic schematics, designs for engineers,
hobbyists, students & inventors:
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Phasing SSB Exciter - (circuit design added 8/03) |
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Plastic Pipe Finder - I used this circuit once to track down the location
of a plastic pipe, buried underground. It transmits a weak RF signal,
which can be picked up by a portable AM radio from about 6 feet away.
(added 12/04) ….(designed by David A. Johnson) |
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Radio Remote Control using DTMF - NOTE: Fair Warning, Annoying
popup. Here is a circuit of a remote control unit which makes use of the
radio frequency signals to control various electrical appliances. This remote
control unit has 4 channels which can be easily extended to 12. This circuit
differs from similar circuits in view of its....(added 6/07) |
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Remote control using VHF modules - A few designs for remote control
switches, using VG40T and VG40R remote control pair, are shown here. The
miniature transmitter module shown in Fig. 1, which just measures 34 mm x 29
mm x 10 mm, can be used to operate all remote control receiver-cum-switch
combinations described in this project....(10/05) |
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RF (Radio Frequency) Transmitter:
#'s A
- F E - O
P - Z |
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