Amplifier 10W Bass-boost

Daftar Komponen :

P1 : 22K Log Potemsiometer (Dual gang for stereo)
P2 : 100K Log Potemsiometer (Dual gang for stereo)
C3, 4 : 470uF/25V
C6 : 47pF 63V ceramic ar polyester capasitor
R2, 4, 8 : 820R 1/4W
R1 : 4K7 1/4W
R3 : 500R 1/2W
R5 : 82K 1/4W
R6, 7 : 47K 1/4W
R9 : 10R 1/2W
R10 : 0,22 4W(wirewound)
C1, 8 : 470nF 63V polyester capasitor
C2, 5 : 100uF/25V
C7 : 10nF 63V polyester capasitor
C9 : 100nF 63V polyester capasitor
D1 : 1N4148 75V 150mA Diode
IC 1 : NE5532 Low noise Dual Op-amp
Q1 : BC547B 45V 100mA NPN Transitor
Q2 : BC557B 45V 100mA PNP Transitor
Q3 : TIP42A 60V 6A PNP Transistor
Q4 : TIP41A 60V 6A NPN Transistor
J1 : RCA audio input socket

Komponen Power Supply :
R1 : 1K5 1/4W
elco : 4700uF/25v
D : 100V 4A Diode bridge
Led merah
T : Centertap tranformer 2A 20V

LM35 Sebagai Sensor Suhu

Ini merupakan sebuah sirkuit elektronik yang dapat digunakan sebagai rangkaian/pengontrol otomatis suhu. Sirkuit saklar sebuah miniatur relay HIDUP atau MATI sesuai dengan suhu terdeteksi oleh satu keping sensor suhu LM35. Bila LM35 mendeteksi suhu yang lebih tinggi dari tingkat preset (ditetapkan oleh VR1), maka relay akan berkerja. Ketika suhu berada di bawah preset suhu, relay adalah tidak akan memberikan tenaga kepada beban yang akan kita gunakan.

Misalnya saja beban yang kita pakai adalah Lampu, atau kipas angin. Rangkaian ini dapat diaktifkan melalui tegangan AC atau tegangan DC 12V dengan pasokan (100mA min.)

Download : schematic, layout and PCB (pdf)

Running Text Seven Segment

Dibawah ini adalah gambar rangkaian running text seven segment. Dan juga tertera download-an untuk program dalam menjalankan running text seven segment ini. Semoga bermanfaat.

Ini adalah link untuk mendownload programnya:
7-SEG.C
7-SEG.HEX

Skema Rangkaian Lampu LED Berjalan

Skema Rangkaian Lampu LED Berjalan - Buat anda yang lagi nyari skema rangkaian, silahkan lihat skema rangkaian LED berjalan dibawah ini:

Skema Rangkaian Lampu Led Berjalan

Components list:
R1_____________10K 1/4W Resistor
R2,R3__________47K 1/4W Resistors
R4______________1K 1/4W Resistor
R5,R6,R7______100K 1/4W Resistors
R8____________820R 1/4W Resistor

C1,C3_________100nF 63V Ceramic or Polyester Capacitors
C2_____________10΅F 50V Electrolytic Capacitor
C4____________330nF 63V Polyester Capacitor (See Notes)
C5____________100΅F 25V Electrolytic Capacitor

D1___________1N4148 75V 150mA Diode
D2-D11_________5 or 3mm. LEDs (any type and color)

IC1___________LM358 Low Power Dual Op-amp
IC2____________4017 Decade counter with 10 decoded outputs IC

M1_____________Miniature electret microphone
SW1____________SPST miniature Slider Switch
B1_______________9V PP3 Battery
Clip for PP3 Battery

Additional circuit parts (see Notes):

R9,R10_________10K 1/4W Resistors
R11____________56R 1/4W Resistor
D12,D13 etc.____5 or 3mm. LEDs (any type and color)
Q1,Q2_________BC327 45V 800mA PNP Transistors
Q3____________BC337 45V 800mA NPN Transistor

Gambar Skema Rangkaian Alarm Mobil

Gambar Skema Rangkaian Alarm Mobil - Salah satu jenis alarm yang sudah banyak digunakan saat ini adalah alarm mobil. Rangkaian alarm mobil sangat dibutuhkan tentunya jika anda ingin membuat alarm mobil sendiri. Lihat gambar rangkaian alarm mobil dibawah ini:

Gambar Skema Rangkaian Alarm Mobil Elektronik:
Skema Rangkaian Alarm Mobil
This FM radio-controlled anti- theft alarm can be used with any vehicle having 6- to 12-volt DC supply system. The mini VHF, FM transmitter is fitted in the vehicle at night when it is parked in the car porch or car park.

The receiver unit with CXA1019, a single IC-based FM radio module, which is freely available in the market at reasonable rate, is kept inside. Receiver is tuned to the transmitter's frequency. When the transmitter is on and the signals are being received by FM radio receiver, no hissing noise is available at the output of receiver. Thus transistor T2 (BC548) does not conduct. This results in the relay driver transistor T3 getting its forward base bias via 10k resistor R5 and the relay gets energised.

When an intruder tries to drive the car and takes it a few metres away from the car porch, the radio link between the car (transmitter) and alarm (receiver) is broken. As a result FM radio module gene-rates hissing noise. Hissing AC signals are coupled to relay switching circ- uit via audio transformer. These AC signals are rectified and filtered by diode D1 and capacitor C8, and the resulting positive DC voltage provides a forward bias to transistor T2. Thus transistor T2 conducts, and it pulls the base of relay driver transistor T3 to ground level. The relay thus gets de-activated and the alarm connected via N/C contacts of relay is switched on.

If, by chance, the intruder finds out about the wireless alarm and disconnects the transmitter from battery, still remote alarm remains activated because in the absence of signal, the receiver continues to produce hissing noise at its output. So the burglar alarm is fool-proof and highly reliable.