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AUDIO AMPLIFIER 1. LM386 audio amplifier chip 2. 200 times voltage gain gives 1 watt (max) output 3. On-board speaker wiring Block 4. On-board 10K variable resistor, volume adjust 5. Onboard LED power indicator 6. Input audio signal via wire-wrap pins 7. Operating voltage: 5 ~ 12V 8. Board size 41mm x 13mm www.ebay.com/itm/LM386-Audio-Amplifier-Module |
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| VCO to 33MHz 1KHz to 33MHz Adjustable Square Wave Oscillator Module. Design based on Linear Technology LTC1799 IC. Datasheet LTC1799 ebay.com.au/itm/1KHz-to-33MHz-Adjustable-Oscillator |
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DC VOLTAGE BOOSTER DC-DC Adjustable Step-up boost Power Converter Module XL6009 Replaces LM2577 Ringing choke type design At max setting with a 3 volt Li cell as input I measured 20 volt O/P (nil load) XL6009 DC-Convertor-Datasheet ebay.com DC-DC-Adjustable-Step-up-boost-Power-Converter |
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LED DIGITAL CLOCK LED Digital: Clock, Date, Voltage, Temperature display Module size 40mm x 13mm requires cr 927 mem backup cell LED-Digital-Clock-Voltage-temp-Detector Shown here fitted to my Satellite receiving antenna Keep a check of the time for: A.O.S. time @ max elevation, L.O.S. |
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FM TRANSMITTER FM transmitter module (wireless microphone) range 100 metres freq range 85~115MHz size 2cm x 1cm current drain 9 mA Aerial impedance 50 ohm useful for audio surveillance ebay.com.au/FM transmitter module |