Radio intercome many found everywhere, even of late ngebrino already be entrenched in intercome, from big cities to remote villages. Radio intercome this kind of telephone, how to connect the cable line be missed. After learning how the radio up intercome this, then you do not need to purchase the electrical shop, where the price is quite expensive. If you own merakitnya, then will not spend Rp 10.000, - (Indonesian currency) but the result more satisfactory.
Components needed:
Components needed:
- Condensator (C) 1 = 0.1 UF
- Condensator (C) 2 = 4.7 UF
- Condensator (C) 3 = 4.7 UF
- Condensator (C) 4 = 0.1 UF
- 1 = IC LM380 or the like
- 2 = IC LM380 or the like
- Output transformer = 25: 1
- Loudspeaker (LS) = speaker used for listening to
- Bateray = 8 - 20 Volt
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