isp51

2016年2月11日星期四

Programmable crystal controlled CTCSS tone encoder kit (Version 2)

Programmable crystal controlled CTCSS tone encoder kit

(Version 2)

pcb8051@gmail.com

1. Programmable crystal controlled CTCSS tone encoder kit

2. It can encode the 47 CTCSS tones listed below and generates a sign wave.

3. Output level is fairly flat from 67 to 118Hz at approx. 3V p-p

and then falls gradually to approx. 1V p-p at 254Hz, most

radio’s require less CTCSS input level at higher frequencies

so this is ideal.(10K VR adjust output level range)

4. Two Keypads to Selected 47 CTCSS tones .

5. Keep 47 CTCSS tones setting parameter in PIC16 internal EEPROM, don't worry about power off. Display CTCSS tones by 4 digit LED display module.

6. There is an encode enable input that connects to the radio's

PTT line (active low). You can tie the encode enable input (PTT) to ground for continuous encode.

7. 47 CTCSS tones Frequency Accuracy: Guarantee ±0.01%.

8. It's powered by 7 to 16V DC and draws less them 15 mA.

9. The product needs to be assembled and soldered by yourself.

10. PCB size is 55 x 57mm.

Note: 47 CTCSS tones listed

OFF, 183.5 Hz, 110.9 Hz,

254.1 Hz, 179.9 Hz, 107.2 Hz,

250.3 Hz, 173.8 Hz, 103.5 Hz,

241.8 Hz, 167.9 Hz, 100.0 Hz,

233.6 Hz, 162.2 Hz, 97.4 Hz,

229.1 Hz, 159.8 Hz, 94.8 Hz,

225.7 Hz, 156.7 Hz, 91.5 Hz,

218.1 Hz, 151.4 Hz, 88.5 Hz,

210.7 Hz, 146.2 Hz, 85.4 Hz,

206.5 Hz, 141.3 Hz, 82.5 Hz,

203.5 Hz, 136.5 Hz, 79.7 Hz,

199.5 Hz, 131.8 Hz, 77.0 Hz,

196.6 Hz, 127.3 Hz, 74.4 Hz,

192.8 Hz, 123.0 Hz, 71.9 Hz,

189.9 Hz, 118.8 Hz, 69.3 Hz,

186.2 Hz, 114.8 Hz, 67.0 Hz,

BOM List:

PIC16F883 IC x1	DIP 28
MCP4921 IC x1	DIP 8
78L05 x1	TO-92
Digit LED_4 x2	DIP 12
8P4R Resistor x2	1K~4.7K
5P4R Resistor x1	1K~4.7K
Push Button x2	DIP 4
Diode 1N4148 x2
10K Resistor x2	1/8W
VR 10K x1
Crystal 20MHz x1
100uF or 10uF x1
20pF or 22pF x2
0.1uF x3	104
0.47uF x1	474
0.33uF x1	334
PIN Header x1
PCB x1

Note:

1.5P4R Attention Pin 1

2. Capacity 100uF Attention polarity

2015年12月27日星期日

DIY Classic CMOY Hi-Fi STEREO Headphone Amplifier

My Email: pcb8051@gmail.com

High quality CMOY headphone amplifier kit. This amplifier is constructed with only high quality components, others use cheap low quality parts and circuit boards.
This bid is not include 9V battery.The product needs to be assembled and soldered by yourself.
The kit is packed in a plastic box to protect the parts in the post.
Shipping By Registered Airmail (Mail International Signed) delivery with tracking number for all countries.

Kit highlights:
(1)Alps Volume control. Japanese made, high quality potentiometer with built in twist-on/off switch.
(2)Texas Instruments TLE2426 "Rail Splitter" virtual ground.
(3)Texas Instruments OPA LM833, Dual Audio Amplifier 15 MHz 80 dB 8-Pin MDIP
(4)This kit also features a high quality 8 pin DIP socket allowing other op amps to be used
(5)High quality, High tolerance Metal film resistors from companies like Vishay and Yageo.
(6)Japanese Nitsuko 1uF 50V MKT Polyester Film Capacitors used for the signal path. These high quality caps feature extremely low noise.
(7)Electrolytic Capacitor japanese Nichicon Gold 330uf/35V.
(8)Quality Molded battery connector
(9)Precision 3.5mm Audio Input and Output Jacks
(10)All of these components were populated in a high quality custom made PCB(PCS Size: 40x48mm)
(11)It is can used rechargeable 9V NiMH battery.The DC Jack is normal Male Connector (5.5*2.1mm)

Alps potentiometer    x1
TI OPA LM833          x1
TI TLE2426　          x1
8 pin DIP socket      x1
TL317                 x1
LED                   x1
1N4148                x1
330uF/35V Nichicon　 x1
9V battery connector x1
DC Jack               x1
3.5mm Audio Jacks     x2
1uF(Nitsuko)          x2
0.1uF                 x2
100K %1              x2
20K   %1              x2
2K    %1              x2
2K    5%              x1
39ohm 5%              x1
PCB                   x1