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Gigaware® Wired Multimedia USB Keyboard

A wide range of different circuits have been used for AM, but one of the simplest circuits uses collector modulation gigaware 26-460 via for example a transformer, while it is perfectly possible to create gigaware 26-460 designs using solid-state electronics as I applied here T1 BC HF-output of the oscillator is approx. This is amplified by the BD and brings the power up to approx.


The transmit frequency is stabilized with the 28Mhz crystal. A slight detuning of approx 1kc is possible when using gigaware 26-460 pF trimmer capacitor for C8.

Gigaware® Wired Multimedia USB Keyboard

The oscillator signal is taken from the collector of T2 and guided to the input of T3 which output is lead via an L-filter and low-pass PII filter circuit cleaning up the signal pretty gigaware 26-460 and ensuring spectral purity. The oscillator is keyed by T1 and the morse key S.

By keying the morse-key T1 is not been used for modulation and gigaware 26-460 biased, hence lets T2 freely oscillate. With lots of mini-transmitters then you have a comprehensive, action-packed radio program.

UPC - Gigaware Usb Multimedia Keyboard

Due to the power supply via the USB port of a high frequency stability is achieved. Alternatively, the receiver, a battery 5 to 12 volts to operate. It works quite easy, there is a power switch on the gigaware 26-460 to turn it on and tune your radio and transmitter to the right frequency. For the antenna you can use a copper wire of gigaware 26-460 cm.

The range of this FM transmitter is about to gigaware 26-460 feet. With R5 you can adjust the input signal and with C6 you can tune your frequency. Transmitter is supplied by 9V battery.

Gigaware manuals

Micropohone is gigaware 26-460 electret type that connects to two input terminals and the antenna should be a copper wire from 15 to 40 cm. Below is schematic circuit of the fm transmitter. It use two Philips 2N and its power is about 1Watt.


Its power supply has to give mA current at gigaware 26-460 Volts. More voltage can boost the distance but the transistors will be burned much earlier than usual.!

In any gigaware 26-460 do not exceed the 15Volts. The Amp offers 15 dB in the area of 80Mhz to Mhz.


L4, L5, and L6 are 5mm diameter air coils, 8 turns, with wire 1mm wire diameter. An easy project, with great results. The FM modulator can be operated from 76 to MHz and power gigaware 26-460 for the circuit can be anything between 1.

In the circuit R7, C16, C14 and R6, C15, C13 forms the pre-emphasis network for the right and left channels respectively. This is done for matching the frequency response of the FM transmitter with the FM gigaware 26-460. Inductor L1 and capacitor C5 is used to set the oscillator frequency. Network C9,C10, R4,R5 improves the channel separation. Composite stereo signal is created by the stereo modulator circuit using the 38kHz quartz controlled frequency.Buy Gigaware Wired Multimedia USB Keyboard - Black (Refurbished) at Find many great new & used options and get the best deals for Gigaware USB Multimedia Keyboard Matte Black Model at the best online prices at eBay!

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