Circuit of Stefan0719, a very good frequency stability 1 transistor AM medium-wave transmitter with good transmission power.
/ stefan0719
Craft instructions or building instructions
Required components:
Capacitors:
100 nF (104)
470 nF (474)
100 uF Elko 16 volts
5 piece 1nF (102)
Resistors:
150 Ohm (brown green brown golden)
2.2 Kohm (red red red gold)
3.3 ohm (orange orange red gold)
47 ohms (yellow purple orange gold)
Transistor:
BC547C or BC547C or BC548C or BC548B or similar
Other components:
3 meters enamelled copper wire 0.15 to 0.45 mm wire diameter
Strips of paper (normal writing or printer paper)
PCB with copper layer (laminated paper or epoxy)
Battery Clip for 9V
9V Battery
possibly audio cable with jack or the like
Tool / tools
AA battery (Mignon) or AA battery
Hacksaw to saw the board
Solder (60% tin 38% lead 2% copper with a flux)
Irons 280 degree soldering temperature
Superglue or different adhesive
Pliers to pinch off of wires
it can be installed and used components, however important that the components are not damaged, check beforehand.
The medium wave transmitter transmits inductively via the wound coil, it is theoretically legal under available 1/2010 BNetzA.
6 окт 2024