Key facts
- Manuals
- 4
- Languages
- ZH · EN
- Last added
- 2026-10-01
Featured HT manuals
HT 97220 Headphone Amplifier / Line Driver Datasheet
The HT97220 is a differential‑input, fully‑differential output audio IC that can drive headphones or line‑level loads without output coupling capacitors. It operates from 2.5 V to 5.5 V, provides a fixed 6 dB gain or an externally adjustable gain, and offers low distortion (THD+N < 90 dB) and high signal‑to‑noise ratio (up to 112 dB).
Typical applications include Bluetooth headsets, smartphones, audio equipment, DVD players, tablets, set‑top boxes and portable game consoles. The device is supplied in a 3 mm × 3 mm QFN16 package and includes pin definitions, schematic and PCB layout diagrams for easy integration. This manual is written in Chinese.
Covers: Features · Overview · Applications · Pin Information · Pin Definitions · Schematic Diagram
HT-7100 Multifunction Conference System User Manual
The HT-7100 multifunction conference system provides comprehensive meeting management with three operation modes—Free, FIFO and Limit—and can be used with simultaneous interpretation and wired/wireless language distribution. The main unit can operate independently or be linked to a PC for software‑based control, supporting up to 60 representative/chair units (240 with extensions) and offering built‑in video tracking, LCD display and audio I/O.
The system consists of a main controller, representative units, a chair unit and optional high‑speed camera (cloud ball). It includes numerous connectors (audio, video, RS‑232/RS‑422/RS‑485, DIN), a 1.5 W monitor speaker, and can be installed in a standard 19‑inch rack. Detailed wiring, power‑up, and configuration steps are provided to ensure proper installation and safe operation. This manual is written in Chinese.
Covers: System Overview · Control Panel Functions · Conference Units · High‑speed Cloud Ball Features · Computer Management Software · Engineering Configuration
HT 7886 Buck Converter Datasheet
The HT7886 is a high‑voltage step‑down switching regulator that accepts a wide 5 V to 100 V input range and delivers up to 2 A continuous load current with a typical peak switching current limit of 3.5 A. It uses hysteretic voltage‑mode control, supports up to 1 MHz switching frequency, and includes short‑circuit protection, thermal shutdown, and a low 200 µA quiescent current for battery‑powered use. The device is offered in an ESOP‑8 package.
Typical applications include scooter and e‑bike power supplies, solar energy systems, automotive and industrial power supplies, and high‑power LED drivers. The datasheet provides pin‑out details, recommended component values, PCB layout guidelines, and design equations for setting output voltage, selecting inductors, and choosing input/output capacitors.
Covers: Features · Description · Ordering Information · Terminal Configuration · Specifications · Typical Operating Characteristics
HT HTM70 Series Portable Power Installation Safety Tester User Manual
The HT HTM70 series is a portable, multi‑function instrument for testing power installations. It provides insulation resistance, grounding resistance, continuity, AC/DC voltage and true‑RMS measurements and complies with EN61557 and EN61010 standards.
The manual describes the features of each model (M70, M71, M72, M73, etc.), technical specifications, operating procedures, safety information and optional accessories. This manual is written in Chinese.
Covers: Series Overview · Model Features · Technical Specifications · Electrical Parameters · Impedance and Continuity Test · Multimeter Functions
Latest HT manuals
HT 97220 Headphone Amplifier / Line Driver Datasheet
Datasheet 5 pages · 607 KB · ZHThe HT97220 is a stereo line‑driver/headphone amplifier delivering up to 125 mW into 32 Ω loads, supporting 5 V and 3.3 V supplies with low THD+N and high SNR.
HT-7100 Multifunction Conference System User Manual
User Manual 10 pages · 284 KB · ZHOwner's manual for the HT-7100 multifunction conference system, covering features, operation modes, connections and setup.
HT 7886 Buck Converter Datasheet
Datasheet 14 pages · 1.9 MB · ENThe HT7886 buck converter datasheet details features, specifications, pin configuration, and application guidelines for a 5‑100 V input step‑down regulator.
HT HTM70 Series Portable Power Installation Safety Tester User Manual
User Manual 24 pages · 921 KB · ZHUser manual for the HT HTM70 series portable tester covering insulation, grounding, continuity and voltage measurements.
Which document do I need?
Datasheet
Ratings, dimensions and ordering codes, for selection and design work.
User Manual
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
Questions answered in HT manuals
What is the maximum output power of the HT97220?
It can deliver up to 125 mW into a 32 Ω load when powered from 5 V.
Which supply voltages are supported by the HT97220?
The device operates from 2.5 V up to 5.5 V.
What meeting management modes does the HT-7100 provide?
The system offers three modes: Free (开放模式), FIFO – first‑in‑first‑out (先进先出), and Limit (限制发言).
What is the input voltage range for the HT7886?
The HT7886 operates with an input voltage from 5 V up to 100 V.
How is the output voltage set on the HT7886?
The output voltage is set by a resistor divider (R1 and R2) as described in the datasheet.
What is the maximum insulation resistance test voltage for the M70 model?
The M70 can test insulation resistance up to 1000 VDC.
From: HT HTM70 Series Portable Power Installation Safety Tester User Manual