|  | Description | Downloads | Specs | Ordering |  | |  | K2620    |  | Shows two voltages, two currents and one temperature reading on a 16x2 LCD
In alternative USB mode, ASCII text from virtual serial port is written directly to 20x4 LCD
Panel meter input range: 5 x 0-4.096V
Panel meter scaling: 2 x 0-4.096V -> 0-60V, 2 x 0-4.096V -> 0-9A, 1 x 0-3V -> 0-100°C
Panel meter resolution: 58.6mV for voltages, 8.79mA for currents
Panel meter update rate: 5Hz
 |  | This simple and cheap device has many uses, but it’s mainly intended to replace multiple panel meters. It can also be used as a small additional text screen for PC, Raspberry Pi or any other computer with USB. | 
|  | K2755    |  | Altronics kits are premium do-it-yourself projects designed to be assembled with ease. However, basic electronics knowledge and soldering skills are essential to construct our kits. A difficulty rating is provided to help determine if your ability is sufficient to build the kit project. Please note, once assembly has been commenced we are unable to honor any warranty claims. Please see the full details here.
 |  | (SC Aug '03) Simply connects to your serial port and provides remote control of Winamp and WinDVD software packages. In addition to this it can also provide a host of other PC automation abilities. Great for watchin | 
|  | K2930    |  |  |  | If you need to switch mains voltages, say from a micro's out- put or any other low voltage source, you need to isolate them from each other. That&rsquos what this project does - it's easy to build and keeps mains voltages locked away from the controller and you! Virtually any low voltage source will do - from 2.7 to 10V. | 
|  | K3220    |  | Altronics kits are premium do-it-yourself projects designed to be assembled with ease. However, basic electronics knowledge and soldering skills are essential to construct our kits. A difficulty rating is provided to help determine if your ability is sufficient to build the kit project. Please note, once assembly has been commenced we are unable to honor any warranty claims. Please see the full details here.
 |  | (EA Aug '97) A flexible circuit that provides preset voltage output of 3, 5, 6, 9 or 12V DC. Suitable for powering a wide range of DC low power circuits, such as running a personal CD/radio from a car cigaret | 
|  | K4344    |  | Senses quick ‘lift-offs’ of throttle 
Monitors voltage on throttle position sensor and manifold absolute pressure sensor
Suits automatic cars only
10ms response time
 |  | (SC Jan '16) The quick brake module is designed to detect fast pedal movements between the accelerator and the brake, switching on the brake lights of your car before your foot reaches the brake pedal. This gives other drivers more notice when travelling behind you and reduces the risk of a rear end accident. | 
|  | K4362    |  | Altronics kits are premium do-it-yourself projects designed to be assembled with ease. However, basic electronics knowledge and soldering skills are essential to construct our kits. A difficulty rating is provided to help determine if your ability is sufficient to build the kit project. Please note, once assembly has been commenced we are unable to honor any warranty claims. Please see the full details here.
 |  | (EA Jan '99) A very simple, yet extraordinarily effective deterrent to car thieving persons. Controlled by a hidden switch inside your car, this alarm will sound an ear-piercing 110dB piezo siren inside you | 
|  | K5026    |  | Altronics kits are premium do-it-yourself projects designed to be assembled with ease. However, basic electronics knowledge and soldering skills are essential to construct our kits. A difficulty rating is provided to help determine if your ability is sufficient to build the kit project. Please note, once assembly has been commenced we are unable to honor any warranty claims. Please see the full details here.
 |  | (SC June '02) Add a remote control volume to your latest audio project or amplifier. Ideal for building into amplifiers or pre-amps. It features PIC controlled precision and a motorised pot so the knob will move whe | 
|  | K5116    |  | Altronics kits are premium do-it-yourself projects designed to be assembled with ease. However, basic electronics knowledge and soldering skills are essential to construct our kits. A difficulty rating is provided to help determine if your ability is sufficient to build the kit project. Please note, once assembly has been commenced we are unable to honor any warranty claims. Please see the full details here.
 |  | (SC Dec 2004) Extremely simple amplifier kit designed to be easy enough for beginners to assemble.  Delivers 20W RMS and is suitable for small hi-fi applications or a PC sound system. | 
|  | K5117    |  | Altronics kits are premium do-it-yourself projects designed to be assembled with ease. However, basic electronics knowledge and soldering skills are essential to construct our kits. A difficulty rating is provided to help determine if your ability is sufficient to build the kit project. Please note, once assembly has been commenced we are unable to honor any warranty claims. Please see the full details here.
 |  | This is the recommended power supply for the K5116 Amplifier Module Kit. | 
|  | K5136    |  |  |  | (SC May 2010) Amplifiers which run from 12V DC generally don't put out much power and they are usually not hifi as well. But this little stereo amplifier ticks the power and low distortion boxes. With a 14.4 | 
|  | K5157    |  | Low distortion and noise 
Easy to build 
Compact PCB  
Clipping Indicator LED  
Onboard DC Fuses  
Specified Power Output  
Power Indicator LED’s  
Overload Recovery  
Square Wave Response
Survives Short Circuits  
Quiescent Current Adjustment  
Output Offset Voltage Adjustment	 
 |  | (SC Jan-May '17) This completely new amp design incorporates most of the features of Silicon Chip Ultra-LD Mk4 200W amp but uses easy-to-solder through-hole components - no SMD! | 
|  | K5158    |  | Low distortion and noise
Easy to build
Extremely compact PCB
Fits on a 75mm heatsink
Stackable in a 2U rack case
Onboard DC Fuses
Specified Power Output
Over-current protection
Overload Recovery
Square Wave Response
Short Circuit protection
Quiescent Current Adjustment
100W RMS into 4 Ω
80W RMS into 8 Ω
 |  | This compact amplifier module kit packs a surprising punch for its size! | 
|  | K5167    |  | Altronics kits are premium do-it-yourself projects designed to be assembled with ease. However, basic electronics knowledge and soldering skills are essential to construct our kits. A difficulty rating is provided to help determine if your ability is sufficient to build the kit project. Please note, once assembly has been commenced we are unable to honor any warranty claims. Please see the full details here.
 |  | (SC Nov '11) Loudspeaker Protector board for K 5165 135W Ultra Low Distortion Amplifier.  Protects your speakers and amplifier from short circuits, Over temperature and DC faults that can occur. | 
|  | K5168    |  | Altronics kits are premium do-it-yourself projects designed to be assembled with ease. However, basic electronics knowledge and soldering skills are essential to construct our kits. A difficulty rating is provided to help determine if your ability is sufficient to build the kit project. Please note, once assembly has been commenced we are unable to honor any warranty claims. Please see the full details here.
 |  | (SC Nov '11) Power Supply Board for K 5165 135W Ultra Low Distortion Amplifier. | 
|  | K5181    |  | High efficiency
high power
Low distortion and noise
Bridging option for driving 8Ω loads with two modules
Over-current protection
Over-temperature protection
Under-voltage switch-off
Over-voltage switch-off
DC offset protection
Fault indicator
Amplifier running indicator
Optional speaker protector module
 |  | (SC Nov '12) This high specced power amplifier operates in Class 'D' as opposed to earlier amplifiers which run in the more conventional Class 'AB' or Class 'A'. The new Class 'D' amplifier offers the extrem | 
|  | K5193    |  |  |  | High quality friction fit clear acrylic case designed to fit  the K5192 Stereo Hifi Valve Preamplifier kit. | 
|  | K5255    |  | Altronics kits are premium do-it-yourself projects designed to be assembled with ease. However, basic electronics knowledge and soldering skills are essential to construct our kits. A difficulty rating is provided to help determine if your ability is sufficient to build the kit project. Please note, once assembly has been commenced we are unable to honor any warranty claims. Please see the full details here.
 |  | Up to 12 K5250 Intercom Sub-stations can be used from this one power supply. | 
|  | K5310    |  | Channels: one
Equaliser bands: seven (63Hz, 160Hz, 410Hz, 1kHz, 2.5kHz, 6.2kHz, 16kHz)
Boost/cut: approximately ±12.5dB (bands overlap; see Fig.1) Signal-to-noise ratio: 108dB (2V RMS), 102dB (1V RMS)
Total harmonic distortion: <0.0005%, 20Hz-20kHz, 20Hz- 22kHz bandwidth (see Fig.2)
Input impedance: 100kΩ 
100pF Output impedance: 470Ω
The power supply as supplied supports 18-24V for the DC option, not 12-24V.
Other features: compact design, uses rotary pots for easy panel mounting
 |  | This mono version of Silicon Chip’s new equaliser is perfect for instrument boxes or PA systems. It features extremely low noise and distortion, so it won’t degrade your signal. Multiple methods of powering the unit make fitting it into an existing system a breeze. | 
|  | K5315    |  | Channels: two
Equaliser bands: seven (63Hz, 160Hz, 410Hz, 1kHz, 2.5kHz, 6.2kHz, 16kHz)
Boost/cut: approximately ±12.5dB (bands overlap; see Fig.1) Signal-to-noise ratio: 108dB (2V RMS), 102dB (1V RMS)
Total harmonic distortion: <0.0005%, 20Hz-20kHz, 20Hz- 22kHz bandwidth (see Fig.2)
Input impedance: 100kΩ 
100pF Output impedance: 470Ω
The power supply as supplied supports 18-24V for the DC option, not 12-24V
Channel separation: >50dB, 20Hz-20kHz (>=80dB 20Hz-1kHz)
Other features: compact design, uses rotary pots for easy panel mounting
 |  | This stereo version of Silicon Chip’s new equaliser is perfect for new and existing home Hi-Fi systems. It features extremely low noise and distortion, so it won’t degrade your signal. Multiple methods of powering the unit make fitting it into an existing system a breeze. | 
|  | K5340    |  | 	 Level control
Bass , Mid and Treble controls
Master Volume
Effects return control
Balanced and unbalanced line outputs
Headphone output
Line and effects return inputs
Effects send output
Uses a minature 5VA E-core transformer M 2155L (not supplied)
 |  | The guitar preamp when combined with any amplifier will produce crystal clear guitar sound free of the usual hum and noise frequently experienced on commercially produced units. With options to expand the unit to tw | 
|  | K5350    |  | Reverb tank type: two spring
Anti-microphonic features: spring suspension, plastic mounting bushings
Spring tank dimensions: 235 x 87 x 34mm (spring tank not included)
Reverb delay times: 23ms, 29ms 
Reverb decay time: around two seconds
Input sensitivity: ~25mV RMS
Frequency response (undelayed signal): 20Hz-19kHz (-3dB) 
Frequency response (reverb signal): 200Hz-3.4kHz (-3dB)
Signal-to-noise ratio (undelayed signal): 62dB
Signal-to-noise ratio (typical reverb setting): 52dB
THD+N (undelayed signal): typically around 0.05% (100mV signal)
Controls: level, reverb depth, reverb on/off
Power supply: 9-15VAC, 18-30VAC centre tapped or 12-15V DC
Quiescent current: typically 30-40mA
 |  | (SC April '17) This two spring tank type reverb unit provides reverberation effects for your guitar or other instrument.  Adds complexity and depth to your sound to impress the punters. Easy to build and integrate into other projects thanks to its 9-15VAC or 12-15VDC power requirement. | 
|  | K5530    |  | Altronics kits are premium do-it-yourself projects designed to be assembled with ease. However, basic electronics knowledge and soldering skills are essential to construct our kits. A difficulty rating is provided to help determine if your ability is sufficient to build the kit project. Please note, once assembly has been commenced we are unable to honor any warranty claims. Please see the full details here.
 |  | (SC Jun-July 2014)  Record CD quality sound directly to an SD card with this touchscreen recorder. It offers hours of recording and playback time from an internal rechargeable Li-Ion AA battery and may be recharged via USB.  A stereo line input and mono mic input are provided via 3.5mm jacks, plus an internal microphone for instant handheld r | 
|  | K5532    |  | 9-36VDC power supply, with polarity protection.
Fixed inverting gains of 1, 10 & 100 for single ended signals.
Fixed gain of 100 for differential signal.
Precision adjustable gain of 10±2%.
2 51Ω impedance outputs.
 |  | If you’ve ever tried to view a microphone signal on an oscilloscope and lost it in the noise, then you’ll know just how handy a signal amplifier can be. This kit provides a breakout for the high-performance AD4625-1 opamp with provision for a number of fixed gains, suitable for working with audio signals. | 
|  | K5542    |  | Altronics kits are premium do-it-yourself projects designed to be assembled with ease. However, basic electronics knowledge and soldering skills are essential to construct our kits. A difficulty rating is provided to help determine if your ability is sufficient to build the kit project. Please note, once assembly has been commenced we are unable to honor any warranty claims. Please see the full details here.
 |  | (SC July. '11) This versatile VOX circuit is triggered whenever a noise or sound is made causing a relay to close for a preset time. Requires a 12V DC power supply and a microphone. Reaction sensitivity and on tim | 
|  | K5804    |  | LED voltage: 12-24V DC
LED current: up to 10A total (ie, 120-240W maximum)
Number of LED strings: up to 16 per unit
LED control method: PWM, 200Hz, 255 brightness steps
LED connectors: 2-pin or 4-pin male headers, 2.54mm pitch
Audio input: 0.5-2.2V RMS nominal, 180kΩ 100pF input impedance
Audio output: 1.1V RMS, THD+N 0.004%, signal-to-noise ratio 100dB
Audio file support: 8-48kHz 16-bit mono or stereo WAV files
Maximum directory depth: eight levels
Maximum files per directory: 100
Control method: universal infrared remote (optional)
Dimensions: 140 x 110 x 35mm
Supply voltage: 12-24V DC
Current drain: ~110mA at 12V
 |  | (SC Oct/Nov '12)  Accepts audio input signals and drives coloured LEDs "in tune" with the music. 16 output channels respond to different audio frequency bands and the light brightness is in proportion to the |