Thursday, 12 January 2017
Transmitter FM 45W with valve
TECHNICAL CHARACTERISTICS:
Materially:
Most elements you can him find in a old back-white television with lamps.
Regulations:
Notes:
Source http://www.electronics-lab.com/
- Tendency of catering: 220V AC
- Frequency of emission at FM: 88~108MHz
- Force of expense: max 45W (without the R3)
- R1 15KW/2W
- R2 1KW/10W
- R3 1KW/10W (for biggest force in the exit you replace with short-circuit).
- C1 50pF trimmer
- C2 30pF trimmer
- C3 22pF/4KV
- C4, c6, c9 10nF/1KV
- C5, c7 1nF/1KV
- C8 100mF+100mF/450V (Double electrolytic)
- C9, c10 10nF
- RFC1, rfc2, rfc3 air Inductors: 15 coils diameter 8mm, from wire 1mm.
- T1 Transformer 220V/6V-1A
- T2 Transformer of configuration with being first 4 or 8W
- T3 Inductor with core ferrite (externally it resembles with small transformer but has a turn only).
- D1 BY127 rectifier
- Lamp 807 SYLV USA or EL34 or equivalent
- ANTENNA Simple dipole L/2. (L= wave length)
- S1 Main switch of catering.
- S2 Switch of catering of rise (him we close after zestacej' the thread).
Regulations:
- With the C2 we regulate the frequency.
- With the C1 we adapt the resistance of aerial (practically him we regulate so that it is heard our voice in the radio as long as you become cleaner).
- The catering better it does not become at straight line from the network 220V but via transformer 220V/220V of isolation and safety 1A.
- When does not exist the R3, the force of expense is bigger, but respectively is increased also the hum 50Hz, because the simplicity of designing.
- The control (Audio In) can become from a kasseto'fwno or other powerful source. If it is microphone it will be supposed precedes amplifier so that it acquires a force of order of 8W roughly.
Source http://www.electronics-lab.com/
Subscribe to:
Post Comments (Atom)
No comments:
Post a Comment