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30 Watts VHF Power Amplifier - (8,564 view(s))

Friday, September 14th, 2012
30 Watts VHF Power Amplifier ElectroSuite.com

ElectroSuite.com – This 30 Watts VHF Power Amplifier was designed for the purpose of increasing an input signal of 4 Watts to 6 Watts operating on the VHF radio frequency band specifically the FM band with 88 to 108 MHz frequency.

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Remote Control Tester using TSOP 1738 - (10,209 view(s))

Friday, September 2nd, 2011
Remote Control Tester using TSOP 1738

Remote Control Tester using TSOP 1738

This Remote Control Tester using TSOP 1738 circuit is very efective to test the remote control which is still function or not, and will be tested by using Infra Red, for example remote control for TV, Radio, AC, etc.

How it works

When the sensor of infra red received the signal, pin 2 will give the output of voltage, this voltage will drive the PNP transistor so that, the LED lamp and disk piezzo will active. For the source power, can be used the 9V battery.

Components

  • Transistor BC557
  • TSOP 1738 Sensor Infra Red
  • R1 = 10k ohm ¼ watt
  • R2 = 1k ohm ¼ watt
  • R3 = 1k ohm ¼ watt
  • BZ = piezzo disk

Electro Suite

Remote Control Tester using TSOP 1738

TSOP 1738 Sensor Infra Red

TSOP 1738 Sensor Infra Red

Remote Control Tester using TSOP 1738

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12VDC 220VAC 100W Mosfet Inverter - (27,105 view(s))

Friday, August 5th, 2011
12VDC 220VAC 100W Mosfet Inverter

12VDC 220VAC 100W Mosfet Inverter

This is 12VDC 220VAC 100W Mosfet Inverter Electro Suite, can invert the voltage from 12 Volt DC into 220 Volt AC with the power of 100 Watt.

Using the MOSFET as the amplifier and the heart of this circuit is IC CD4047 as function of Multivibrator Astable. The Frequency can be modified by VR1, the multivibrator output of CD4047 as the complement squarewave for the driver of MOSFET T1 and T2.

Transformator with the current of 2 until 3 Ampere, with the primary coil of 0V and 220V as the output and the secondary coil 12V CT as the input that driven by MOSFET T1 and T2.

Components

  • C1 = 2200μ / 25V
  • C2 = 0,01μ
  • C3 = 0,1μ / 600V
  • C4 = 2,2μ / 400V
  • VR1 = 100 KΩ
  • R2 = 390 KΩ
  • R3 = 330 Ω
  • R4 = 820 Ω
  • R5, R6 = 220 Ω
  • S2 = SPST Switch
  • T1, T2 = IRF540
  • MOV RDN = MOV RDN240/20
  • B1 = Battery (6×2) V, 4Ah
  • X2 = Transformator 2-3A
  • IC1 = CD4047
  • D5 = 1N4007
  • D7 = LED

Electro Suite

12VDC 220VAC 100W Mosfet Inverter

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3 in 1 Sirens using Transistor - (8,227 view(s))

Thursday, July 21st, 2011
3 in 1 Sirens using Transistor

3 in 1 Sirens using Transistor

This is 3 in 1 Sirens using Transistor Electro Suite, we can get 3 sound using this 3 in 1 Sirens using Transistor circuit, Fire Brigade, Police and Ambulance.

From the voltage of 12V we will get the current of about 180 mA.

Components

  • Voltage = 12 VDC
  • R1, R9 = 2K2
  • R2 = 470 ohm
  • R3 = 47 K
  • R4, R8 = 22 K
  • R5, R6, R7 = 18 K
  • R10 = 3K3
  • R11 = 1K
  • S1 = Switch 3 Ways
  • T1, T2, T3, T4 = BC547
  • T5 = BD136
  • T6 = AD162 / MJ2955
  • LS1, LS2 = Loudspeaker 8 ohm / 15 Watt
  • C1 = 100µ / 16v
  • C2 = 2µ2 / 16v
  • C3 = 10µ/16v
  • C4 = 47µ/16v
  • C5 = 22n
  • C6 = 33n

Electro Suite

3 in 1 Sirens using Transistor

3 in 1 Sirens using Transistor - extremecircuits.net

Source : extremecircuits.net

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