Hobbykit Ltd
Stereo LED VU Meter (2x6 LEDs) - HK1521
The HK1521 stereo LED VU meter is designed for visual indication of audio signal levels for left and right channels. It is built using two KA2284 (AN6884) integrated circuits, with each IC driving a 6..
5.70 €
LED Sound Level Indicator with Microphone (12 LEDs) - HK1523
The HK1523 is a mono linear LED audio indicator with a built-in microphone and microphone preamplifier, designed for visual indication of sound level. The device is suitable for applications where amb..
8.60 €
Color Music Device with 9 LEDs - HK1525
The color music device is fully implemented using transistors. Transistors T1 and T2 operate as a microphone preamplifier, with microphone sensitivity adjustable via a trimmer. The audio signal is di..
0.00 €
Microphone Preamplifier - HK1535
This device is a transistor-based microphone preamplifier designed for use with an electret microphone connected directly to the circuit input. The preamplifier increases the microphone signal level t..
1.90 €
Car Alarm System 2 - HK1551
The car alarm system is based on a Microchip microcontroller and is designed to protect vehicles against unauthorized access. The system features two security zones - a door zone and a shock sensor z..
0.00 €
Home Alarm System - HK1552
The home alarm system is based on a Microchip microcontroller and is designed for protecting residential properties, offices, and small premises. The system features two security zones and a panic bu..
0.00 €
Time Relay 0 to 99 Minutes - HK1553
The time relay is based on a Microchip microcontroller and allows time setting in the range of 0 to 99 minutes. A dual seven-segment LED display is used to show the set and remaining time. Time input..
10.79 €
Audio Power Amplifier 100W TDA7294 - HK1560
The low-frequency power amplifier is a Class AB design based on the TDA7294 integrated circuit, intended for high-quality, high-power audio applications. The amplifier delivers both high sinusoidal a..
0.00 €
Audio Amplifier 100W - HK1561
The low frequency power amplifier is implemented using a single operational amplifier and a transistor output stage, providing high dynamic performance and very low nonlinear distortion. It is designe..
0.00 €
Thermostat 5-30°C - HK1566
The thermostat is designed for automatic temperature control and regulation within a range of 5 to 30°C by switching heating elements. The device is based on the LM324 integrated circuit, which conta..
4.93 €
Audio Amplifier 1W - HK1570
The low frequency amplifier is implemented using a single TA7368P integrated circuit and is intended for low-frequency audio signal amplification. The output power is up to 1 W at a supply voltage of..
0.00 €
Audio Amplifier 1W - HK1571
The low-frequency audio amplifier is built using a single LM386 integrated circuit, designed for low-power audio applications. The amplifier provides an output power of up to 1 W and operates over a ..
2.50 €
Audio Amplifier 1W - HK1571K
The low-frequency audio amplifier is built using a single LM386 integrated circuit, designed for low-power audio applications. The amplifier provides an output power of up to 1 W and operates over a ..
1.94 €
Liquid Level Controller (Level Meter) - HK1572
The liquid level controller is designed for automatic monitoring and control of liquid levels in tanks and containers using probe sensors. The device operates with three control levels - low, medium,..
7.67 €
Photorelay - HK1573
The photo relay is designed for automatic switching of lighting when ambient light levels decrease (at dusk). A phototransistor S1 is used as the light-sensitive sensor. The integrated circuit U1D op..
4.86 €